exercise4_23.java

Introduction to java programming 一书中所有编程练习部分的源码

public class Exercise4_23 {
    
  public static void main(String[] args) {
    displayMessage("Welcome to Java!", 10);
  }
    
  public static void displayMessage(String message, int times) {
    if (times > 0) {
        System.out.println(message);
        displayMessage(message, times - 1);
    }
  }
}