Which will legally declare, construct, and initialize an array?

int [] myList = {"1", "2", "3"};

What is instance variable?

Instance variables are variables within a class but outside any method

Instance variables are static variables within a class but outside any method

Instance variables are variables defined inside methods, constructors or blocks

Which of this statement is incorrect?

All object of a class are allotted memory for the methods defined in the class

All object of a class are allotted memory for the all the variables defined in the class

If a function is defined public it can be accessed by object of other class by inheritance.

main() method must be made public

public class Foo { public static void main(String[] args) { try { return; } finally { System.out.println( "Finally" ); } } }

An exception is thrown at runtime.

public class X { public static void main(String [] args) { try { badMethod(); System.out.print("A"); } catch (Exception ex) { System.out.print("B"); } finally { System.out.print("C"); } System.out.print("D"); } public static void badMethod() { throw new Error(); /* Line 22 */ } }

C is printed before exiting with an error message.

BC is printed before exiting with an error message

FileNotFoundException

Is a subclass/extends IOException

Java Quiz: 25 Questions

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

We are use Scanner Library in java for...

Give permissions to the user

Correcting software errors

Allows user to read data

Allows the user to enter data

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Single line comments look like?

\\

//

/*

*/

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are some possible causes of compile-time syntax errors reported by javac?

Capitalization

Missing semicolons

missing curly brackets

all are true

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What keyword identifies a group of statements and data that work together as a unit?

Main

Static

Class

Package

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes the JRE?

The JRE is Oracle Corporation’s brand name for Java sold at a profit

The JRE is something that runs in your web browser to enable animations

The JRE is the development environment in which you type your source code

The JRE is a combination of the Java Virtual Machine and the Java Class Libraries

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why would you want to add comments to a program?

So programmer can understand the code better

To describe the author of a program and the program's purpose

all are correct

None are correct

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which function declaration below best describes the entry point of your program?

void enter(String[] args)

public static void main(String[] args)

public static void main()

static int main(String args)

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Java Quiz

We are use Scanner Library in java for...

Single line comments look like?

What are some possible causes of compile-time syntax errors reported by javac?

What keyword identifies a group of statements and data that work together as a unit?

Which of the following best describes the JRE?

Why would you want to add comments to a program?

Which function declaration below best describes the entry point of your program?

What file extension will your Java source files have?

Which will legally declare, construct, and initialize an array?

What is instance variable?

Access all questions and much more by creating a free account

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