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// MethodOverload.java
// Using overloaded methods
public class MethodOverload {
 public static void main(String[] args) {
  System.out.println("The square of integer 7 is " + square(7));
  System.out.println("\nThe square of double 7.5 is " + square(7.5));
 }
 public static int square(int x) {
  return x * x;
 }
 public static double square(double y) {
  return y * y;
 }
}
在JAVA中,函数名字相同,返回类型不同是允许的,在调用过程中,调用int还是double取决于函数square()括号里的参数是int还是double,在调用相应函数。
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原文地址:http://www.cnblogs.com/shouhutian/p/5966151.html