11. What will be the output of the program?

class SC2
{
    public static void main(String [] args)
    {
        SC2 s = new SC2();
        s.start();
    }

    void start()
    {
        int a = 3;
        int b = 4;
        System.out.print(" " + 7 + 2 + " ");
        System.out.print(a + b);
        System.out.print(" " + a + b + " ");
        System.out.print(foo() + a + b + " ");
        System.out.println(a + b + foo());
    }

    String foo()
    {
        return "foo";
    }
}

9 7 7 foo 7 7foo
72 34 34 foo34 34foo
9 7 7 foo34 34foo
72 7 34 foo34 7foo

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12. What will be the output of the program?

class Test
{
    static int s;
    public static void main(String [] args)
    {
        Test p = new Test();
        p.start();
        System.out.println(s);
    }

    void start()
    {
        int x = 7;
        twice(x);
        System.out.print(x + " ");
    }

    void twice(int x)
    {
        x = x*2;
        s = x;
    }
}

7 7
7 14
14 0
14 14

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13. What will be the output of the program?

class Two
{
    byte x;
}

class PassO
{
    public static void main(String [] args)
    {
        PassO p = new PassO();
        p.start();
    }

    void start()
    {
        Two t = new Two();
        System.out.print(t.x + " ");
        Two t2 = fix(t);
        System.out.println(t.x + " " + t2.x);
    }

    Two fix(Two tt)
    {
        tt.x = 42;
        return tt;
    }
}

null null 42
0 0 42
0 42 42
0 0 0

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14. What will be the output of the program?

class BoolArray
{
    boolean [] b = new boolean[3];
    int count = 0;

    void set(boolean [] x, int i)
    {
        x[i] = true;
        ++count;
    }

    public static void main(String [] args)
    {
        BoolArray ba = new BoolArray();
        ba.set(ba.b, 0);
        ba.set(ba.b, 2);
        ba.test();
    }

    void test()
    {
        if ( b[0] && b[1] | b[2] )
            count++;
        if ( b[1] && b[(++count - 2)] )
            count += 7;
        System.out.println("count = " + count);
    }
}

count = 0
count = 2
count = 3
count = 4

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15. What will be the output of the program?

public class Test
{
    public static void leftshift(int i, int j)
    {
        i <<= j;
    }
    public static void main(String args[])
    {
        int i = 4, j = 2;
        leftshift(i, j);
        System.out.printIn(i);
    }
}

2
4
8
16

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Java - Operators and Assignments

Java - Operators and Assignments

Java Programming