Chapter 4: Making the Most of (Web host forum) Variables and
Chapter 4: Making the Most of Variables and Their Values 99 Assignment operators If you read the preceding section, which is about operators that add 1, you may be wondering whether you can manipulate these operators to add 2 or add 5 or add 1000000. Can you write numberOfBunnies++++and still call yourself a Java programmer? Well, you can t. If you try it, an error message appears when you try to compile your code. So what can you do? As luck would have it, Java has plenty of assignment operators that you can use. With an assignment operator, you can add, subtract, multiply, or divide by anything you want. You can do other cool operations, too. Listing 4-8 has a smorgasbord of assignment operators (the things with equal signs). Figure 4-14 shows the output from running Listing 4-8. Listing 4-8: Assignment Operators import static java.lang.System.out; class UseAssignmentOperators { public static void main(String args[]) { int numberOfBunnies = 27; int numberExtra = 53; numberOfBunnies += 1; out.println(numberOfBunnies); numberOfBunnies += 5; out.println(numberOfBunnies); numberOfBunnies += numberExtra; out.println(numberOfBunnies); numberOfBunnies *= 2; out.println(numberOfBunnies); out.println(numberOfBunnies -= 7); out.println(numberOfBunnies = 100); } }
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