6CSN1

Which of the following function is used to generate the application's top-level window?

• 1. JPanel

• 1. JFrame

• 1. JCombo

• None

Among AWT and Swing which is platform independent?

• AWT

• Swing

• Both

• None

In Java, can a class implement multiple interfaces

• Only Absract classes can implement

• Classes can implement only 1 interface

• Classes can implement multiple classes only

• Yes, classes can implement

What is the purpose of abstract classes

• To declare abstract methods

• To provide a base class with common methods and fields

• To make a class final

• All the above

1. Which statement is incorrect>?
   1. Class can contain another class inside it

2. 2. Class can contain an interface inside it

3. 3. An interface can contain an interface inside it

4. 4. An interface can contain a class inside it

• 1

• 2

• 3

• None

• 4

Spot the mistake in the code snipet

int i = 0; while(i < 5) { i++; } System.out.println(i);

• • Infinite loop

• • Syntax error

• • No error

• • Prints 0

What will be the output of the following code snippet.

if(false){ System.out.println("True"); } else{ System.out.println("False"); }

• True

• • False

• • Error

• • No Output

Identify the error.

for(int i=0; i<=5; i++) {

System.out.println(i); }

System.out.println(i);

• • Syntax error outside the loop

• • No error

• • Variable i not accessible outside loop

• • Infinite loop

What does 'BufferedReader' in Java provide that 'Scanner' does not?

• • Faster input reading

• • Input from file only

• • Different data types

• • Graphical interface

Analyze this code.

int[] nums = new int[3];

nums[1] = 10;

int x = nums[1] + nums[0];

System.out.println(x);

• • 0

• • 10

• • Error

• • None