Elance Resources and Guide: Skills Test Answers

Skills Test Answers - Java

A function that defines the steps necessary to instantiate one object of that class is called:

an instantiator.

a destructor.

a constructor.

What does the synchronized keyword on a method do?

Uses the object's intrinsic lock to prevent two threads from accessing the method simultaneously.

Creates a new semaphore to prevent two threads from accessing the method simultaneously.

Prevents objects outside the current package from accessing the method.

Ensures that each call to a synchronized method is run in a separate thread.

Given the code: Integer i= new Integer("1"); if (i.toString() == i.toString()) System.out.println("Equal"); else System.out.println("Not Equal");

Prints "Equal"

None of the above

Compiler error

Prints "Not Equal"

Consider the following code: int i=aReader.read(); What is the true of the type of variable aReader?

It has to be a FileReader

It can either be a FileReader or a BufferReader.

It can neither be a FileReader or a BufferReader.

It has to be a BufferReader.

If "A" is a class, then what does the statement "A a1;" do?

The statement does not do anything.

An object 'a1' of class 'A' is created.

The object reference variable 'a1' should be in title case.

The syntax is incorrect.

The object reference variable 'a1' is declared.

What is displayed when the following code is compiled and executed? String s1 = new String("Test"); String s2 = new String("Test"); if (s1==s2) System.out.println("Same"); if (s1.equals(s2)) System.out.println("Equals");

Same

Equals

Same Equals

The code compiles, but nothing is displayed upon execution.

Do we need to import the java.lang package at anytime?

Yes

The pattern described below is known as: public class Foo{ private static Foo instance; private Foo(){ } private static getInstance(){ if (instance == null){ instance = new Foo(); } return instance; }

the Singleton pattern

the Observer Pattern

the Flyweight pattern

the Factory pattern

Suppose ArrayList x contains two strings [Beijing, Singapore]. Which of the following methods will cause the list to become [Beijing, Chicago, Singapore]?

x.add(1, "Chicago")

x.add(0, "Chicago")

x.add(2, "Chicago")

x.add("Chicago")

Which statement is wrong?

ArrayList<Integer> myList = new ArrayList<Integer>();

ArrayList<Double> myList = new ArrayList<Double>();

ArrayList<String> myList = new ArrayList<Integer>();

ArrayList<String> myList = new ArrayList<String>();

ArrayList<String> myList = new ArrayList<String>(10);

Under the strictest definition, an interface may contain only:

constructors

fields

additional pylons

abstract methods

which of the following is a correct statement:

a class can inherit multiple abstract superclass

a class can implement multiple interface

a class can inherit multiple superclass

What is the syntax for creating a class derived from the class named MyClass?

public class MyDerived : MyClass

class MyDerived implements MyClass

class MyDerived extends MyClass

When you run a Java program, the system is running the Java Runtime Engine (JRE) as an executable which then:

process the java code through the interpreter which is pointed to by the CLASSPATH statement.

processes the java code through the Java Virtual Machine (JVM).

none of these

processes the java code through the native OS interpreter.

Consider public class MyClass{ public MyClass(){/code/} // more code... } To instantiate MyClass, you would write?

MyClass mc = new MyClass();

MyClass mc = MyClass();

MyClass mc = MyClass;

It can't be done. The constructor of MyClass should be defined as public void MyClass(){/*code*/}

MyClass mc = new MyClass;

_ jumps out of an entire loop, whereas _ jumps to the next iteration.

stop; jump

stop; continue

break; continue

break; jump

Consider the following code snippet String river = new String(“Columbia”); System.out.println(river.length()); What is printed?

Columbia

river

The correct operator for 'conditional or' is:

Do you need to explicitly define a constructor for every class?

Yes

public class Dog extends Animal{ ... } is an example of...

Encapsulation

Abstraction

Type casting

Inheritance

Which keywords would you use to handle exceptions in Java?

try, catch, end

throw, catch, do

throw, take, finally

try, catch, finally

throw, catch, end

Class definitions in Java can have which of the following access levels?

private

protected

public

all of these

All Java files must have a .java extension and are compiled with the:

system runtime compiler

javac compiler

gcc compiler

An applet can do which of the following?

Self initialize

Stop running

Start running

All of these

Which of the following is the correct signature for a main method that can be used as an entry point by the Java runtime?

public void main(String[] args)

public static int main(String[] args)

public static void main(Collection<String> c)

public static void main(String[] args)

The varargs method: public void foo(String... strings) may be called with:

foo("bar1", "bar2", "bar3");

foo("bar1", "bar2");

All of these.

foo("bar1");

The process of changing a datatype of a value is called:

typecasting

hardcasting

datatyping

What is the proper syntax for a Java class's main method?

private static void main(String[] args)

public static void main(String[] args)

private void main (String[] args)

public static main(String[] args)

public void static main(String[] args)

What are the core JMS-related objects required for each JMS-enabled application?

Within a session, the appropriate sender or publisher or receiver or subscriber objects.

All of these

A connection object provided by the JMS server (the message broker)

Within a connection, one or more sessions, which provide a contest for message sending and receiving

A JavaBean is a special Java class:

which must be serializable so that the state can be stored.

all of these

which must follow standard naming conventions for attributes such as getXxxx.

which must have a public, no-argument constructor.

Which of these keywords is used to define packages in Java?

pack

pkg

Package

Pkg

package

Which of the following is correct way of importing an entire package ‘pkg’?

import pkg

Import pkg.*

import pkg.*

Import pkg

How do you declare a destructor in Java?

myClass::~myClass();

You don't need a destructor

@destructor myClass(){ }

@Override System.gc(){ }

You can use the 'static' keyword for which of the following?

Classes

All of these

Methods

Variables

As a general syntax rule, Java is case sensitive on:

all platforms.

only Microsoft Windows platforms.

only on UNIX based platforms.

Can an interface have member variables?

No, never

Yes, as long as they are public, static and final

Will a program run if the main() is not static?

Yes

What keyword is used to add external package members to the current Java file?

import

using

get

add

uses

Which of the following JNDI properties provide security information?

java.naming.security.principal

All of these

java.naming.security.credential

java.naming.security.authentication

What company developed java?

IBM

Facebook

Sun Microsystems (Oracle)

Google

Microsoft

Which of the following is correct for the "main" method of a class?

@Main public void main(int argc, String[] argv) {}

public static void main(String [] args) { }

public void main(int argc, String [] argv) {}

public final void main(String arg0, String arg1="default") {}

What effect does declaring a method as final have?

The method can only accept final parameters.

The return value of the method will be final.

The parameters passed to the method cannot be modified.

The method cannot be overridden in subclasses.

How do you prevent a class from being extended by a subclass?

Declare all its members as private.

Declare the class as abstract.

Declare all member variables and methods as protected.

Declare the class as final.

You read the following statement in a valid Java program: submarine.dive(depth); What must be true?

"dive" must be a method.

"dive" must be the name of an instance field.

"submarine" must be a method.

"submarine" must be the name of a class.

"depth" must be an int.

What's wrong with the following method: public static int getSize(){ int temp = super.getSize(); if(temp==0) temp=this.size; return temp; }

static methods cannot refer to "this" or "super"

static methods cannot return type "int"

There is nothing wrong with this method.

Are primitive data types passed by reference or passed by value?

Passed by reference

Passed by value

________ is when a subclass implements a method that is already provided by a superclass.

Method overriding

Method overloading

Method overdriving

Object orientation overdev

If I write return at the end of the try block, will the finally block still execute?

Yes

What is a token?

A token is a group of digits

A token is a group of characters that means something in a particular context.

A token is any character that may be used as punctuation

A token is a type of expression

What will be the output of below code String a="abc"; String b="abc"; String c=new String("abc"); if(a==c && a.equals(b)){ System.out.println("They are equal"); } else System.out.println("They are not equal");

They are not equal

They are equal

A deadlock error occurs when a Java program

has a for loop or while loop that can never satisfy its condition, causing the loop to run forever and the program to wait indefinitely.

has a circular try-catch block, in which the catch results in the catch block being reached again repeatedly, causing the program to run indefinitely.

has a circular dependency on 2 or more synchronized objects, causing one of the objects to wait indefinitely.

The StringBuffer and StringBuilder classes in Java are optimized for

retrieval of all or part of a string but not altering the string.

creating strings which change considerably.

creating strings which only change once.

Java allows you to specify two types of variables: primitive, which store a single value, and

reference, where the data is accessed indirectly.

neither of these

wide, which reference a double byte variable.

The "synchronized" keyword does the following

Prevents concurrency within methods or statements

Aligns samples within the JVM for accuracy when profiling

Prohibits code from being executed during garbage collection

Provides a convenient shortcut for creating threads

Ensures that each call finishes at the same time

Which Map implementation is safe for modification in a multi-threaded program?

java.util.concurrent.ConcurrentHashMap

java.util.TreeMap

java.util.LinkedHashMap

java.util.WeakHashMap

Can you mark an interface as final?

Yes

A method is considered to be overloaded when:

You cannot overload a method

the method throws an exception

they have multiple call signatures

they have different return types

Can a class be both abstract and final?

Yes

Can you declare an abstract class with no abstract methods?

Yes

What is the output of the below code ? int a = 0; int b = 0; if (a++ == 1 || b++ == 1) {} System.out.println(a + " " + b);

0 0

0 1

1 0

1 1

Can we override a static method?

Yes

Can static and abstract keywords be used together?

Yes

Which one of these primitive types is unsigned?

long

double

int

char

float

Java programs must have at least one method called main() _____.

Both of these

In order to compile

In order to execute

TreeMap class is used to implement which collection interface?

List

SortedMap

SortedSet

Set

What is transient variable?

It is the default variable in the class.

A variable which is not static.

A variable which is not serialized.

A variable which is serialized.

Java interfaces can extend...

nothing: extension is not valid for interfaces.

multiple interfaces.

final classes.

one other interface.

Which of the following is not a method in java.lang.String?

String valueOf(char[] data)

boolean isNull()

String toString()

int compareTo(String anotherString)

If you override method "equals()", what other function you must override for the class to work properly?

public int hashCode()

public int hash()

public static int hash()

public static int hashCode()

String objects in Java are immutable which means:

that, if constant, they cannot be changed once they are created.

that they can be changed multiple times without altering the reference.

that they can be changed one time without changing the reference.

What is the keyword to forbid the serialization of an instance field?

transient

synchronized

break

serializable

volatile

Will a program compile if the main method is defined private?

No, it does not compile

Yes, but will not run

Java's Reflection feature allows you to do things including (but not limited to) :

Optimize recursion at runtime by extending the reflection class.

Dynamically change the Java Heap Size.

Perform pseudo-pointer manipulations in Java.

Obtain the names of a class' members and display them at runtime.

What is the difference between Vector and ArrayList?

ArrayList is synchronized whereas Vector is not

Both are identical

Vector is synchronized whereas ArrayList is not

Which is a valid keyword in Java?

Float

interface

unsigned

string

The @Override annotation

All of these answers are correct

Is not required to implement an interface method.

Is not required to override an inherited method in a parent class.

Will warn you on compilation if your annotated method signature doesn't match a method in a parent class or interface.

Clearly documents the intention to override a method in a parent class or implement a method declared in an interface.

The foreach loop in Java is constructed as:

for (Object o in collection)

foreach (Object o : collection)

foreach (collection as Object o)

there is no foreach loop in Java

for (Object o : collection)

Is it possible to create zero length arrays?

Yes, but only for primitive datatypes

Yes, you can create arrays of any type with length zero

No, you cannot create zero length arrays, but the main method may be passed an array of String references that is of length zero if a program is started without any arguments

Yes, but only for arrays of object references

No, arrays of length zero do not exist in Java

Which of these is the wildcard symbol for use in generic type specification?

If you set one object variable equal to another object variable:

you end up with two copies of the data and two references to the variable.

you end up with one copy of the data and two references to the data.

you end up with one copy of the data and one reference to the data.

SWING Toolkit contains

component set (subclasses of JComponent),support classes,interfaces

support classes,interfaces

interfaces,component set (subclasses of JComponent)

component set (subclasses of JComponent)

In Math and other java.lang Classes, generally all methods are declared _.

final

static

package private

private

abstract

How do we compare enum types in java

Equals Method

Both

Arithmetic comparator "=="

what are the parts of JNDI architecture

Java API

JNDI API and JNDI SPI

JNDI API

JNDI SPI

Which of the following is true for interface variables.

They cannot exist and the compiler will throw a 'field name is ambiguous' error if you attempt to make them.

They may exist, and they can be transient and volatile.

They may exist, and they can be transient but not volatile.

They may exist, but they must be public, static and final.

They may exist, and they can be volatile but not transient.

Which of the following is not a legal identifier?

$cash

_class

m1g

31days

A call to System.gc() does what?

Grants control of the System object to the currently executing thread.

Forces the JVM to run garbage collection to reclaim memory.

Suggests that the JVM run garbage collection to reclaim memory.

find the correct output: StringBuffer fb= new StringBuffer("one two one"); int i, j ; i= fb.indexOf("one"); System.out.println(i); j= fb.LastIndexOf("one"); System.out.println(j);

1,8

0,3

1,3

0, 8

Is "main" a keyword in Java?

Yes

Which method is used to sort a Collection by natural order of its elements?

Sort.sort

Collections.sort

Collection.sort

CollectionsUtils.sortCollection

Can a non-generic class have a generic constructor?

Yes

What does a synchronized method use as a mutex in Java?

The owning object's (this's) mutex.

The method's mutex.

A globally declared mutex.

The Java Virtual Machine manages its own:

memory and allocates it as necessary.

both of these

namespace and allocates more if necessary.

none of these

Which exception could be thrown if x is a String variable? while (x.equals("apple")) {

java.lang.ClassNotFoundException

java.lang.NoSuchMethodException

None of these exceptions can be thrown.

java.lang.NullPointerException

Which of the following IS NOT a property of the equals() method?

reflexive

transitive

symmetric

atomic

Are static fields of a class included in serialization?

Yes

Can a HashMap contain a null key?

Yes

What is an abstract class?

A class with an undefined constructor

A class that is defined by another class

A class of methods that must be implemented

A class that does not define all of its methods

Non-static attributes can be accessed without an instance of the class.

True

False

Only if they are public

Only if they are private

What is the default scope of a method?

protected

package-private

public

private

static

What is the assignment of 'animal' an example of in the following code? public abstract class Animal{...} public class Dog extends Animal{...} Animal animal = new Dog();

Polymorphism

Inheritance

Encapsulation

Abstraction

Typecasting

Which of these keywords is used to manually clean up memory in java?

finalizeGarbageCollection

finalize

final

finally

If you need to determine exactly which class your object is:

use the myClass property.

use the instanceOf operator.

use the getClass() method.

Which of the following classes include the getSession method used to retrieve an object that implements the HttpSession interface?

HttpServletRequest

HttpServletResponse

SessionConfig

Session Context

When is an object's finalize method called?

Whenever the JVM's garbage collection algorithm decides to call it.

When no references to the object exist in the application.

When System.gc() is called.

When the object needs to release any resources it holds.

What is one of the benefits of Generics in Java?

Enforcement of better Casting at Complie time

Easy handling of ClassCastException at runtime

Improved Runtime type checking

Elimination of Casts when getting objects from Collections

Which of the following is false regarding a class of a JavaBeans component?

it is serializable.

it is a public class

it has a public constructor with no arguments

it is transient

package test; public class Test { } -------- package test.subtest; public class SubTest extends Test{} Is this code compiles without error?

Yes

Which method is used to force one thread to wait for another thread to finish?

sleep(long milliseconds)

stop()

yield()

join()

which of the following can cause serious system failures??

sleep()

stop()

resume()

suspend()

Which of the following APIs is used to create secure socket connections and manage digital certificates?

JSSE

Servlet

JTAPI

JNDI

Which of the following can be abstract?

All of these

Private Methods

Static Methods

Constructors

None of these

Which of these statements is correct?

new and delete are keywords in the Java language

for, while and next are keywords in the Java language

return, goto and default are keywords in the Java language

try, catch and copy are keywords in the Java language

Does Java provide any construct to find out the size of an object?

Yes, the sizeof operator

The keyword 'volatile' on a field is used in Java to:

Make the compiler aware that a variable will change frequently at runtime and allow the compiler to optimize for this.

Guarantee that the field's current value is read, not a thread-cached value.

Allow access to memory mapped devices (memory mapped I/O).

Which of the following variable declarations is illegal in Java?

float myVar = 5.7f;

List<int> myVar;

List<HashMap<String,Integer>> myVar;

Double[] myVar = {1.0,2.0,2.5,2.7};

What is the difference between static inner class and a non static inner class?

A static inner class can only have static methods, an inner class may have non static methods.

A static inner class has no difference from a non static inner class.

An inner class has no reference to its parent class, a static inner class does.

A static inner class has no reference to its parent class, a non static inner class does.

Which JVM parameter is used to set the maximum heap memory size?

XX:PermGemSize

Xxx

Xms

Xmx

Which java class provides variables local to each thread?

Runnable

LocalThread

ThreadLocal

Thread

String x = "abc"; In this code, abc is:

an Immutable String Object

a Mutable String Object

an Immutable String Literal

a Mutable String Literal

Which of the following is true about this Java snippet: String a = "hello"; String b = "hello"; boolean x = (a == b);

x is never true because you are comparing two different Objects.

x is true because the String values are different.

x can be true because of Java String interning.

An exception is thrown because you cannot compare Strings this way.

How many objects are created: String s1="String"; String s2="String"; String s3="String";

One

Two

Three

If I write System.exit (0); at the end of the try block, will the finally block still execute?

Yes

An Enum implicitly implements which of the following interfaces?

Observer and Listener

Set and Comparable

Cloneable and Serializable

Comparable and Serializable

Iterable and Set

A java.util.ConcurrentModificationException can be thrown in a mono-threaded application.

True

False

boolean b = 1 > 0 ? 1 < 0 : false; What is the value of b?

The code will not compile.

true

false

What are the minimum and maximum values of a byte?

-128 and 127

-8 and 7

This depends on the Java Virtual Machine implementation.

-255 and 256

-127 and 128

Which of the following statements are true?

(1 >>> 1) == Integer.MAX_VALUE

(-1 >> 1) == Integer.MAX_VALUE

(-1 >>> 1) == Integer.MAX_VALUE

(1 << 31) == Integer.MAX_VALUE

(1 <<< 31) == Integer.MAX_VALUE

Which of the following statements is true?

(-1 >>> 1) == Integer.MAX_VALUE

(1 << 31) == Integer.MAX_VALUE

(-1 >> 1) == Integer.MAX_VALUE

(1 >>> 1) == Integer.MAX_VALUE

What is the result when you compile and run the following code? public class Test { public void method() { for(int i = 0; i < 3; i++) { System.out.print(i); } System.out.print(i); } }

0123

None of these

Compilation error

0122

Java is a pure object oriented language. true or false?

false

true

Which one of the following statements is false?

An abstract class may implement an interface without defining any of its methods.

An abstract class may have a no-argument constructor.

An abstract class cannot implement an interface.

You can have member variables in an abstract class.

If x is a byte and y is a double, what is an acceptable type for variable z in this expression? z = (short) x/y * 2;

Short

Int

Double

Byte

Long

What's the worst-case complexity of the function Arrays.sort(int[])?

O(n)

O(n^2)

O(2^n)

O(n*log(n))

During execution of code inside a "synchronized" statement, threads other than the executing one are prevented from:

Acquiring any locks currently held by the executing thread

Making progress until the executing thread exits the block

Acquiring the built-in lock associated with the object referenced by the synchronized statement

Accessing members of the object referenced by the synchronized statement

How many bytes are in a long in Java?

A nested class declared inside a block (a local class) can access other variables defined in its immediately enclosing scope, but only when they are:

public

primitives

final

initialized

declared before the class

Which of the following is true about overloading vs overriding methods?

Overloaded methods must be the same data type

Final methods can be overriden, but not overloaded

Overloading arbitrarily changes method access

Overloading happens at compile time

In Java, "const" is:

not a java keyword

a regular java keyword

a reserved but unused keyword

Which of the following lines will not throw a compile time error?

int a2[5];

All throw compile time errors.

int []a1[] = new int[3][3];

int a2[4] = {3,4,5,6};

What is the difference between an inner class and a nested class?

A nested class is any class that is defined within another class. An inner class is a static nested class.

An inner class is any class that is defined within another class. A nested class is an abstract inner class.

A nested class is any class that is defined within another class. An inner class is a non-static nested class.

There is no difference; they are synonymous.

A subclass's constructor will always implicitly call its superclass's default, no-argument constructor except when:

The subclass constructor in question makes an explicit call to another of its superclass's constructors.

The subclass defines additional constructors to its default, no-argument constructor.

The superclass is abstract.

The superclass defines additional constructors to its default, no-argument constructor.

Can you overload a static method signature?

Yes

By which method does Java pass data?

Both pass by reference and pass by value.

Pass by reference only.

Pass by value only.

Can a constructor be final?

Yes

What will be the output of following Java code: int someVariable = 10_000; int someAnotherVar = 10000; if(someVariable == 10000){ System.out.println("equal"); } else{ System.out.println("not equal"); }

Runs successfully and prints "not equal"

Compile time error

Run time error

Runs successfully and prints "equal"

When using swing, which of the following is NOT a method on a JCheckBox object?

checkb.addListener(Listener);

checkb.addItemListener(item-listener);

checkb.isSelected();

checkb.setSelected(state);

Of the following, which is not a java.lang Class?

StringBuffer

Math

StringBuilder

Void

Arrays

True or false? StringBuilder is Thread-safe.

True

False

What is the output of the below code ? int a = 0; int b = 0; if (a++ == 1 && b++ == 1); System.out.println(a + " " + b);

0 1

1 1

1 0

0 0

such construct in Java: class Foo { { // some code } }

is another way to define the constructor

is an instance initializer, additional to constructor and called after it

is a class initializer, for a static fields initialization

is not proper, doesn't exist in Java

is an instance initializer, additional to constructor and called before it

Is it possible to start a thread twice?

Yes

byte a = 64; byte b = (byte) (a << 2); What is the value of b?

256

128

-1

Add this annotation to your annotation declaration in order to ensure it's available for reflection.

@Runtime

@Target("RUNTIME")

@Retention(RetentionPolicy.REFLECTION)

@Reflectable

@Retention(RetentionPolicy.RUNTIME)

The default constructor of an enum type is implicitly:

private

protected

public

public @interface A { String value(); } How would you change the "value" element declaration to give it an empty String as its default?

String value() default "";

String value("");

String value() = "";

String value() {return "";};

String value(default="");

Which of these statements is TRUE for enums:

All of the above.

Enum can extend another enum.

Enum can implement an interface.

Enum can extend a class.

Skills Test Answers - Java

A function that defines the steps necessary to instantiate one object of that class is called:

What does the synchronized keyword on a method do?

Given the code: Integer i= new Integer("1"); if (i.toString() == i.toString()) System.out.println("Equal"); else System.out.println("Not Equal");

Consider the following code: int i=aReader.read(); What is the true of the type of variable aReader?

If "A" is a class, then what does the statement "A a1;" do?

What is displayed when the following code is compiled and executed? String s1 = new String("Test"); String s2 = new String("Test"); if (s1==s2) System.out.println("Same"); if (s1.equals(s2)) System.out.println("Equals");

Do we need to import the java.lang package at anytime?

The pattern described below is known as: public class Foo{ private static Foo instance; private Foo(){ } private static getInstance(){ if (instance == null){ instance = new Foo(); } return instance; }

Suppose ArrayList x contains two strings [Beijing, Singapore]. Which of the following methods will cause the list to become [Beijing, Chicago, Singapore]?

Which statement is wrong?

Under the strictest definition, an interface may contain only:

which of the following is a correct statement:

What is the syntax for creating a class derived from the class named MyClass?

When you run a Java program, the system is running the Java Runtime Engine (JRE) as an executable which then:

Consider public class MyClass{ public MyClass(){/*code*/} // more code... } To instantiate MyClass, you would write?

_____ jumps out of an entire loop, whereas _____ jumps to the next iteration.

Consider the following code snippet String river = new String(“Columbia”); System.out.println(river.length()); What is printed?

The correct operator for 'conditional or' is:

Do you need to explicitly define a constructor for every class?

public class Dog extends Animal{ ... } is an example of...

Which keywords would you use to handle exceptions in Java?

Class definitions in Java can have which of the following access levels?

All Java files must have a .java extension and are compiled with the:

An applet can do which of the following?

Which of the following is the correct signature for a main method that can be used as an entry point by the Java runtime?

The varargs method: public void foo(String... strings) may be called with:

The process of changing a datatype of a value is called:

What is the proper syntax for a Java class's main method?

What are the core JMS-related objects required for each JMS-enabled application?

A JavaBean is a special Java class:

Which of these keywords is used to define packages in Java?

Which of the following is correct way of importing an entire package ‘pkg’?

How do you declare a destructor in Java?

You can use the 'static' keyword for which of the following?

As a general syntax rule, Java is case sensitive on:

Can an interface have member variables?

Will a program run if the main() is not static?

What keyword is used to add external package members to the current Java file?

Which of the following JNDI properties provide security information?

What company developed java?

Which of the following is correct for the "main" method of a class?

What effect does declaring a method as final have?

How do you prevent a class from being extended by a subclass?

You read the following statement in a valid Java program: submarine.dive(depth); What must be true?

What's wrong with the following method: public static int getSize(){ int temp = super.getSize(); if(temp==0) temp=this.size; return temp; }

Are primitive data types passed by reference or passed by value?

________ is when a subclass implements a method that is already provided by a superclass.

If I write return at the end of the try block, will the finally block still execute?

What is a token?

What will be the output of below code String a="abc"; String b="abc"; String c=new String("abc"); if(a==c && a.equals(b)){ System.out.println("They are equal"); } else System.out.println("They are not equal");

Consider public class MyClass{ public MyClass(){/code/} // more code... } To instantiate MyClass, you would write?

_ jumps out of an entire loop, whereas _ jumps to the next iteration.