1. public void foo( boolean a, boolean b)
{
    if( a )
    {
        System.out.println("A"); /* Line 5 */
    }
    else if(a && b) /* Line 7 */
    {
        System.out.println( "A && B");
    }
    else /* Line 11 */
    {
        if ( !b )
        {
            System.out.println( "notB") ;
        }
        else
        {
            System.out.println( "ELSE" ) ;
        }
    }
}

If a is true and b is true then the output is "A && B"
If a is true and b is false then the output is "notB"
If a is false and b is true then the output is "ELSE"
If a is false and b is false then the output is "ELSE"

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2. switch(x)
{
    default:
        System.out.println("Hello");
}

Which two are acceptable types for x?

    byte
    long
    char
    float
    Short
    Long

1 and 3
2 and 4
3 and 5
4 and 6

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3. public void test(int x)
{
    int odd = 1;
    if(odd) /* Line 4 */
    {
        System.out.println("odd");
    }
    else
    {
        System.out.println("even");
    }
}

Which statement is true?

Compilation fails.
"odd" will always be output.
"even" will always be output.
"odd" will be output for odd values of x, and "even" for even values.

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4. public class While
{
    public void loop()
    {
        int x= 0;
        while ( 1 ) /* Line 6 */
        {
            System.out.print("x plus one is " + (x + 1)); /* Line 8 */
        }
    }
}

Which statement is true?

There is a syntax error on line 1.
There are syntax errors on lines 1 and 6.
There are syntax errors on lines 1, 6, and 8.
There is a syntax error on line 6.

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Java - Flow Control Question and Answer

Java - Flow Control Question and Answer

Java Programming