Java™ How To Program (Early Objects), Tenth Edition

Difference Between Prefix Increment and Postfix Increment Operators

Figure 4.15 demonstrates the difference between the prefix increment and postfix increment versions of the ++ increment operator. The decrement operator (--) works similarly.

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 1   // Fig. 4.15: Increment.java 2   // Prefix increment and postfix increment operators. 3  4   public class Increment 5   { 6      public static void main(String[] args) 7      { 8         // demonstrate postfix increment operator 9         int c = 5;10         System.out.printf("c before postincrement: %d%n", c); // prints 511         System.out.printf("    postincrementing c: %d%n", c++); // prints 5 12         System.out.printf(" c after postincrement: %d%n", c); // ...