What is the output of this program?

class mainclass
 {
  

What is the output of this program?

class mainclass
 {
         public static void main(String args[])
          {
             boolean var1 = true;
 	    boolean var2 = false;
 	    if (var1)
 	        System.out.println(var1);
 	    else
 	        System.out.println(var2);
        }
      }

2) What is the output of this program?

class area
 {
         public static void main(String args[])
          {
                  double r, pi, a;
              r = 9.8;
              pi = 3.14;
              a = pi * r * r;
              System.out.println(a);
         }
      }

3) What is the output of this program?

class dynamic_initialization
      {
         public static void main(String args[])
          {
             double a, b;
             a = 3.0;
             b = 4.0;
 	    double c = Math.sqrt(a * a + b * b);
 	    System.out.println(c);
         }
      }

4) What will be the output?

if(1 + 1 + 1 + 1 + 1 == 5)
  {
     System.out.print("TRUE");
  }
 else
  {
      System.out.print("FLASE");
 }

5) What is the output of this program?

class evaluate
      {
         public static void main(String args[])
          {
             int a[] = {1,2,3,4,5};
 	    int d[] = a;
 	    int sum = 0;
 	    for (int j = 0; j < 3; ++j)
                 sum += (a[j] * d[j + 1]) + (a[j + 1] * d[j]);
 	    System.out.println(sum);
         }
      }