What is the output of this program?

class area
 {
       

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);
         }
      }

2) What is the output of this program?

class increment
      {
         public static void main(String args[])
          {
                      int g = 3;
              System.out.print(++g * 8);
         }
      }

3) 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);
         }
      }

4) What will be the output?

public class Test
  {
       public static void main(String args[])
 {
      int a = 42;
       double b = 42.25;
      System.out.print((a%10)+" "+(b%10));
       }
 }

5) What is the output of this program?

class mainclass
 {
         public static void main(String args[])
          {
             char a = 'A';
             a++;
 	    System.out.print((int)a);
         }
      }