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6. 

What will be the output of the program? 

class Base
{ 
    Base()
    {
        System.out.print("Base");
    }
} 
public class Alpha extends Base
{ 
    public static void main(String[] args)
    { 
        new Alpha(); /* Line 12 */
        new Base(); /* Line 13 */
    } 
}

A. Base
B. BaseBase
C. Compilation fails
D. The code runs with no output
7. 

What will be the output of the program? 

class Super 
{ 
    public Integer getLength() 
    {
        return new Integer(4); 
    } 
} 

public class Sub extends Super 
{ 
    public Long getLength() 
    {
        return new Long(5); 
    } 

    public static void main(String[] args) 
    { 
        Super sooper = new Super(); 
        Sub sub = new Sub(); 
        System.out.println( 
        sooper.getLength().toString() + "," + sub.getLength().toString() ); 
    } 
}

A. 4, 4
B. 4, 5
C. 5, 4
D. Compilation fails.
8. 

What will be the output of the program? 

public class ArrayTest 
{ 
    public static void main(String[ ] args)
    { 
        float f1[ ], f2[ ]; 
        f1 = new float[10]; 
        f2 = f1; 
        System.out.println("f2[0] = " + f2[0]); 
    } 
}

A. It prints f2[0] = 0.0
B. It prints f2[0] = NaN
C. An error at f2 = f1; causes compile to fail.
D. It prints the garbage value.
9. 

What will be the output of the program? 

import java.util.*;
public class NewTreeSet2 extends NewTreeSet 
{
    public static void main(String [] args) 
    {
        NewTreeSet2 t = new NewTreeSet2();
        t.count();
    }
}
protected class NewTreeSet
{
    void count() 
    {
        for (int x = 0; x < 7; x++,x++ ) 
        {
            System.out.print(" " + x);
        }
    }
}

A. 0 2 4
B. 0 2 4 6
C. Compilation fails at line 2
D. Compilation fails at line 10