9.代码
public class Music {
String name;
int times;
public Music(String name, int times){
this.name = name;
this.times = times;
}
public void play(int i){
//i为播放时长
System.out.println("音乐"+ name + "正在播放," + "播放时长为" + i + ",剩余时长为" + (times - i));
}
public void getInfo(){
System.out.println("音乐名称:"+ name);
System.out.println("音乐时长:"+ times);
}
public static void main(String[] args) {
Music m1 = new Music("JAVA进行曲", 12);
m1.play(10);
m1.getInfo();
}
}
10. 输出结果为:101,100,101,101
11.代码
public class Method {
public double method(double a, double b){
double c = a + b;
return c;
}
public double method(double a, int b){
double c = a + b;
return c;
}
public static void main(String[] args) {
Method m = new Method();
System.out.println(m.method(m.method(10.0, 20.0), 100));
}
}
12.代码
public class Employee {
String name;
int sex;
int age;
String position;
double salary;
public Employee(String name,int sex,int age,String position,double salary){
this.name = name;
this.sex = sex;
this.age = age;
this.position = position;
this.salary = salary;
}
public Employee(String name,int sex,int age){
this.name = name;
this.sex = sex;
this.age = age;
}
public<