JAVA 2

What is the output of the following program?

public class Test implements Runnable {

    public void run() { System.out.printf("%d", 3); }

    public static void main(String[] args)

        throws InterruptedException

    {

        Thread thread = new Thread(new Test());

        thread.start();

        System.out.printf("%d", 1);

        thread.join();

        System.out.printf("%d", 2);

    }

}

• 123

• 213 or 231

• 132 or 312

• 321

What is the output of the following program? 

public class Test

{

    private static int value = 20;

    public int s = 15;

    public static int temp = 10; 

    public static class Nested

    { 

      private void display()

      {

          System.out.println(temp + s + value);

      } 

    } 

      

    public static void main(String args[])

    { 

      Test.Nested inner = new Test.Nested(); 

      inner.display(); 

    }

}

• Compilation error

• 1020

• 101520

• NONE

What is the output of the following program? 

import java.io.*;

public class Test

{

    public void display() throws IOException

    {

        System.out.println("Test");

    }

 

}

 

class Derived extends Test

{

    public void display() throws IOException

    {

        System.out.println("Derived");

    }

    public static void main(String[] args) throws IOException

    {

        Derived object = new Derived();

        object.display();

    }

}

• Test

• Derived

• Compilation error

• Runtime error

What is the Output of the following Java Program?

import java.util.LinkedList;

 

class Demo {

public void show()

    {

        LinkedList<String> list = new LinkedList<String>();

 

        System.out.println(list.getClass());

    }

} public class Main {

public static void main(String[] args)

    {

        Demo demo = new Demo();

        demo.show();

    }

}

• class java.util.LinkedList 

• String 

• Compiler Error 

• NULL

What is the output of the following program? 

Java

public class Test extends Thread

{

    public void run()

    {

        System.out.printf("Test ");

    }

    public static void main(String[] args)

    {

        Test test = new Test();

        test.run();

        test.start();

    }

}

• compile time error

• runtime error

• Test

• Test Test

For the given code select the correct answer. public interface Test

{

    public int calculate();

    protected interface NestedInterface

    {

        public void nested();

    }

}

• Compile time error due to NestedInterface

• Compile time error due to access modifier of NestedInterface

• No Compile time error

• NestedInterface cannot hold any function declaration.

What will be the output of the following program?

public class Test {

public     static void main(String[] args)

    {

        int[] arr = { 1, 2, 3, 4, 5 };

        System.out.println(arr);

    }

}

• 1

• Compile-time error 

• 12345

• [I@Hashcode_in_Hexadecimal 

What will be the output for the following program?  

class Test {

public

    static void main(String[] args)

    {

        int b = 2147483648;

        System.out.println(b);

    }

}

• No output 

• 2147483648 

• 2147483647

• compile-time error 

What will be the output for the following program?  

public

class Test {

public

    static void main(String[] args)

    {

        int x = 0xGeeks;

        System.out.println(x);

    }

}

• 1

• Compile-time error 

• null

• runtime error

What will be the output for the following program?  

public

class Test {

public

    static void main(String[] args)

    {

        // we are assigning 8 byte data to 4 byte variable

        float f = 10l;

        System.out.println(f);

    }

}

• 10

• Compile-time error 

• 10.0

• runtime error