overload.java

Java 程序设计源码 只提供了部分

public class OverLoad {

	int i =4 ,j = 5;

	int sum() {
		return i + j;
	}

	int sum(int i,int j) {
		return i + j;
	}

	int sum(int i,int j,int k) {
		return i + j + k;
	}

	double sum(double i,double j) {
		return i + j;
	}

	public static void main(String[] args) {
		OverLoad o = new OverLoad();

		System.out.println(o.sum());
		System.out.println(o.sum(2,3));
		System.out.println(o.sum(2,3,4));
		System.out.println(o.sum(2.3,4.5));
	}
}