Multiple selections : If Statement « Statement Control « Java Tutorial

1. Java Tutorial
2. Statement Control
3. If Statement

If there are multiple selections, you can also use if with a series of else statements.

if (booleanExpression1) {
    // statements
} else if (booleanExpression2) {
    // statements
}
...
else {
    // statements
}

For example:

public class MainClass {

  public static void main(String[] args) {
    int a = 0;

    if (a == 1) {
      System.out.println("one");
    } else if (a == 2) {
      System.out.println("two");
    } else if (a == 3) {
      System.out.println("three");
    } else {
      System.out.println("invalid");
    }
  }

}