Programmers at War

What will be printed as the output of the following program?

public class testincr
{
public static void main(String args[])
{
int i = 0;
i = i++ + i;
System.out.println(“I = ” +i);
}
}

What is the output of the following program:

public class testmeth
{
static int i = 1;
public static void main(String args[])
{
System.out.println(i+” , “);
m(i);
System.out.println(i);
}
public void m(int i)
{
i += 2;
}
}

Consider the following code fragment

Rectangle r1 = new Rectangle();
r1.setColor(Color.blue);
Rectangle r2 = r1;
r2.setColor(Color.red);

After the above piece of code is executed, what are the colors of r1 and
r2 (in this order)?

Consider the two methods (within the same class)

public static int foo(int a, String s)
{
s = “Yellow”;
a=a+2;
return a;
}
public static void bar()
{
int a=3;
String s = “Blue”;
a = foo(a,s);
System.out.println(“a=”+a+” s=”+s);
}
public static void main(String args[])
{
bar();
}

What is printed on execution of these methods?

Which of the following is TRUE?

In java, an instance field declared public generates a compilation error.

int is the name of a class available in the package java.lang

Instance variable names may only contain letters and digits.

A class has always a constructor (possibly automatically supplied by the java compiler).

The more comments in a program, the faster the program runs.

What is the output of this program?
 
import java.awt.*;

    import java.applet.*;

    public class myapplet extends Applet

        Graphic g;

        g.drawString("A Simple Applet", 20, 20);

Default value

Compilation Error

Runtime Error

What is the output of this program?

class selection_statements

{

        public static void main(String args[])

            int var1 = 5;

            int var2 = 6;

            if ((var2 = 1) == var1)

                System.out.print(var2);

            else

                System.out.print(++var2);

What will this code print?

    int arr[] = new int [5];
    System.out.print(arr);

value stored in arr[0]

00000

Class name@ hashcode in hexadecimal form