Java Examples - Method overloading

Java Examples

First look at the method overloading (Overloading) definition: If there are two ways to approach the same name, but the parameters are inconsistent, it can be said that a method which is overloaded with another method. Specifically described as follows:

• The method of the same name
• Parameter type of the method, the order of at least a number of different
• Return type of the method may not be the same
• The method may not be the same modifier
• main method can also be overloaded

The following example shows how to reload MyClass class info methods:

/*
 author by w3cschool.cc
 MainClass.java
 */
class MyClass {
   int height;
   MyClass() {
      System.out.println("无参数构造函数");
      height = 4;
   }
   MyClass(int i) {
      System.out.println("房子高度为 "
      + i + " 米");
      height = i;
   }
   void info() {
      System.out.println("房子高度为 " + height
      + " 米");
   }
   void info(String s) {
      System.out.println(s + ": 房子高度为 "
      + height + " 米");
   }
}
public class MainClass {
   public static void main(String[] args) {
      MyClass t = new MyClass(3);
      t.info();
      t.info("重载方法");
      //重载构造函数
      new MyClass();
   }
}

The above code is run output is:

房子高度为 3 米
房子高度为 3 米
重载方法: 房子高度为 3 米
无参数构造函数

Java Examples