overloadmethod.java

来自「Java程序设计实用教程源代码 本书源代码按章分别放置在不同的文件夹中,所有程」· Java 代码 · 共 32 行

package overload;
class Pen {
  String color;
  int length;
  public Pen() {
  }
  void Write() { //没有任何参数的Write()方法，声明为void
    System.out.println("Write nothing");
  }
  void Write(String language) { //有一个字符串参数的Write()方法，声明为void
    System.out.println("Write in " + language);
  }
  void Write(float num1, float num2) { //有两个数值型参数的Write()方法
    System.out.print(num1 + "+" + num2 + "=");
  }
  void displayResult(float num1, float num2) { //显示两个数的和
    System.out.print(num1 + num2);
  }
}
public class OverloadMethod {
  public static void main(String args[]) {
    String language = "English";
    float num1 = 5.0f;
    float num2 = 1.2f;
    Pen p = new Pen();
    p.Write();
    p.Write(language);
    p.Write(num1, num2);
    p.displayResult(num1, num2);
  }
}