package code;
public class Animal {
private String name;
private double height;
private String color;
public Animal(String name){
this.name=name;
};
public Animal(String name, double height, String color){
this.name=name;
this.height=height;
this.color=color;
}
public void voice(){};
public String getName(){
return this.name;
}
public double getHeight(){
return this.height;
}
public String getColor(){
return this.color;
}
public void hunter(){System.out.println(this.name+" kill some animal");}
public static void main(String[] args) {
}
}
public class Cat extends Animal {
public Cat(String name,String color, double height){
super(name,height,color);
}
public Cat(String name){
super(name);
}
public void hunter(){
System.out.println("Kill some mouse");
}
}
public class textAnimal {
public static void main(String[] args) {
Dog dog=new Dog("大黄");
Cat cat=new Cat("小红");
dog.hunter();
cat.hunter();
Animal animal=new Animal("四脚动物");
animal.hunter();
doHunter(cat);
}
public static void doHunter(Animal animal){
if(animal instanceof Dog){
System.out.println("这是一条可爱的狗");
Dog d = (Dog)animal;
}else{
System.out.println("这不是狗");
}
animal.hunter();
}
}
public class Dog extends Animal{
public Dog(String name,String color, double height){
super(name,height,color);
}
public Dog(String name){
super(name);
}
public void hunter(){
System.out.println("Kill some animal");
}
}
public class Circle {
private double radius=1.0;
private String color;
public Circle(){};
public Circle(double radius){
this.radius=radius;
}
public Circle(double radius, String color){
this.radius=radius;
this.color=color;
}
public void setColor(String color){
this.color=color;
}
public void setRadius(double radius){
this.radius=radius;
}
public double getRadius(){
return this.radius;
}
public double getArea(){
return this.radius*this.radius*Math.PI;
}
public String getColor(){
return this.color;
}
public double getCircumference(){
return 2*Math.PI*this.radius;
}
public void toString(String color, double radius){
System.out.println("Circle[radius="+this.radius+",color="+this.color+"]");
}
public static void main(String[] args) {
Circle c=new Circle();
Circle c2=new Circle(9);
Circle c3=new Circle(1,"red");
System.out.println(c2.getRadius());
System.out.println(c2.getArea());
System.out.println(c3.getColor());
c3.toString("红",16);
System.out.println("圆的周长为:");
System.out.println(c3.getCircumference());
}
}
public class Employee {
private int id;
private String firstName;
private String lastName;
private int salary;
public Employee(){};
public Employee(int id , String firstName, String lastName, int salary){
this.firstName=firstName;
this.lastName=lastName;
this.id=id;
this.salary=salary;
}
public int getID(){
return this.id;
}
public String getFirstName(){
return this.firstName;
}
public String getLastName(){
return this.lastName;
}
public String getName(){
return this.firstName+ " "+this.lastName;
}
public int getSalary(){
return this.salary;
}
public void setSalary(int salary){
this.salary=salary;
}
public int getAnnualSalary(){
return 12*this.salary;
}
public int raiseSalary(int percent){
this.salary=(int)salary*（1+（double）percent/100）;
return salary;
}
public String toString(){
String str2="Employee[id="+this.id+",name="+getName()+",Salary= "+this.salary+"]";
return str2;
}
}
public class testEmployee {
public static void main(String[] args) {
Employee employee=new Employee(01,"kewu","liao",100000);
System.out.println(employee.toString());
System.out.println(employee.raiseSalary(50));
System.out.println(employee.getSalary());
employee.setSalary(1000000);
System.out.println(employee.toString());
}
}
public class Rectangle {
private float length=1.0f;
private float width=1.0f;
public Rectangle(){}
public Rectangle(float length,float width){
if(length>0&&width>0){
this.length=length;
this.width=width;
}
}
public float getLength(){
return this.length;
}
public void setLength(float length){
if(length>0){
this.length=length;
}
this.length=length;
}
public float getWidth(){
return this.width;
}
public void setWidth(float width){
if(width>0){
this.width=width;
}
}
public double getArea(){
return this.length*this.width;
}
public double getPerimeter(){
return this.length*this.width;
}
public String toString(){
String str2="Rectangle[length="+this.length+",width="+this.width+"]";
return str2;
}
}
public class rectangleTest {
public static void main(String[] args) {
Rectangle rectangle=new Rectangle(-1,-2);
Rectangle rectangle2=new Rectangle(18,10);
System.out.println("输出长方形1的长:");
System.out.println(rectangle.getLength());
System.out.println("输出长方形1的宽:");
System.out.println(rectangle.getWidth());
System.out.println("输出长方形1的:");
System.out.println(rectangle2.toString());
System.out.println(rectangle2.getLength());
System.out.println(rectangle2.getWidth());
System.out.println("长方形的周长:");
System.out.println(rectangle2.getPerimeter());
System.out.println("长方形的面积:");
System.out.println(rectangle2.getArea());
}
}
