方法重载的定义

使用案例

public static void main(String[] args) {// 匹配到max(int a, int b)System.out.println(max(1, 3));// 匹配到max(double a, double b)System.out.println(max(1L, 3L));// 匹配到max(double a, double b, double c, double d)，int自动转换为doubleSystem.out.println(max(1, 3, 2));
}static int max(int a, int b) {System.out.println("执行了：max(int a, int b)");return a > b ? a : b;
}static double max(double a, double b) {System.out.println("执行了：max(double a, double b)");return a > b ? a : b;
}static double max(double a, double b, double c) {System.out.println("执行了：max(double a, double b, double c)");double result1 = a > b ? a : b;return result1 > c ? result1 : c;
}static double max(double a, double b, double c, double d) {System.out.println("执行了：max(double a, double b, double c, double d)");double result1 = a > b ? a : b;double result2 = result1 > c ? result1 : c;return result2 > d ? result2 : d;
}