java 4

What is the output of the following program?

class Derived 

{

    protected final void getDetails()

    {

        System.out.println("Derived class");

    }

}

  

public class Test extends Derived

{

    protected final void getDetails()

    {

        System.out.println("Test class");

    }

    public static void main(String[] args)

    {

        Derived obj = new Derived();

        obj.getDetails();

    }

}

• Derived class

• Test class

• Runtime error

• Compilation error

What is the output?

public class Prg {

    public static void main(String[] args)

    {

        char[] str = { 'i', 'n', 'c', 'l', 'u', 

                'd', 'e', 'h', 'e', 'l', 'p' };

        System.out.println(str.toString());

    }

}

• includehelp

• Error

• [C@19e0bfd (Memory Address)

• NULL

What is the output of the following program?

import java.io.IOException;

  

class Derived 

{

    public void getDetails() throws IOException //line 23

    {

        System.out.println("Derived class");

    }

}

  

public class Test extends Derived

{

    public void getDetails() throws Exception //line 24

    {

        System.out.println("Test class");

    }

    public static void main(String[] args) throws IOException //line 25

    {

        Derived obj = new Test();

        obj.getDetails();

    }

}

• Compilation error due to line 23

• Compilation error due to line 24

• Compilation error due to line 25

• All the above

What is the output of the following program?

interface Anonymous

{

    public int getValue();

}

public class Outer 

{

    private int data = 15;

    public static void main(String[] args)

    {

        Anonymous inner = new Anonymous()

                {

                    int data = 5;

                    public int getValue()

                    {

                        return data;

                    }

                    public int getData()

                    {

                        return data;

                    }

                };

        Outer outer = new Outer();

        System.out.println(inner.getValue() + inner.getData() + outer.data);

    }

}

• Compilation error

• Runtime error

• 20

• 00

What will be the output of the following program?  

Java

public class Test

{

    static char ch = 59;

    public    static void main(String[] args)

    {

        System.out.println(ch);

    }

}

• compile-time error 

• null 

• No output 

• ;

class Helper

{

private int data;

private Helper()

{

data = 5;

}

}

public class Test

{

public static void main(String[] args)

{

Helper help = new Helper();

System.out.println(help.data);

}

}

find output??

• Compilation error

• 5

• runtime error

• none

What is the output of the following program?

public class Test

{

    public static void main(String[] args)

    {

        double data = 444.324;

        int value = data;

        System.out.println(data);

    }

}

• 444.324

• 444

• Runtime error

• Compilation error

What will be output of following program?

class Test 

{

    final int MAXIMUM = m1();

  

private int m1()

    {

        System.out.println(MAXIMUM);

        return 1500;

    }

  

public static void main(String[] args)

    {

        Test t = new Test();

  

        System.out.println(t.MAXIMUM);

    }

}

• Compilation error

• runtime error

• 0

  1500

• 1500

  1500

public class Test

{

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

{

Test t = new Test();

// making t eligible for garbage collection

t = null;

// calling garbage collector

System.gc();

// waiting for gc to complete

Thread.sleep(1000);

System.out.println("end main");

}

@Override

protected void finalize()

{

System.out.println("finalize method called");

System.out.println(10/0);

}

}

find output ??

• finalize method called end main

• finalize method called

• end main

• none

class Test2 {

public

static void main(String[] args)

{

int if = 65;

int else = 97;

System.out.println(if + " : " + else);

}

}

find the output??

• Error

• A : B

• 65 : 97

• none