重写toString方法输出对象信息

class persion {
	String name;
	int age;
	public persion() {

	}
	public persion(String name, int age) {
		super();
		this.name = name;
		this.age = age;
	}
	public String toString() {
		return this.name + "-" + this.age;
	}
}
public class Demo1 {
	public static void main(String[] args) {
		persion p = new persion("王五", 19);
		System.err.println(p);
	}

}