简单讲，方法重载就是为了方便程序员记忆，比如你有say方法需要有好几个功能，写say1,say2又费事还弱智，就可以采用重载.

package java03;public class demo1 {// 练习-------------------public int max(int number1, int number2) {if (number1 > number2) {return number1;}else {return number2;}}public double max(double number1, double number2) {if (number1 > number2) {return number1;}else {return number2;}}public double max(int number1, int number2, int number3) {if (number1 > number2 && number1 > number3) {return number1;}else if (number2 > number1 && number2 > number3) {return number2;}else {return number3;}}}

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