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+
+
+
+
+###  Graphic类（图形）
+
+```
+package Day0505;
+
+//父类Graphic图形
+public abstract class Graphic {
+    private String name;
+
+    public Graphic(){}
+
+    public Graphic(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+
+    public double area(){
+        return 0.0;
+    }
+
+    public double perimeter(){
+        return 0.0;
+    }
+
+    public String getInfo(){
+        return null;
+    }
+
+}
+```
+
+### Rectangle类（矩形）
+
+```
+package Day0505;
+
+public class Rectangle extends Graphic{
+    private double length;
+    private double width;
+
+    public  Rectangle(){}
+
+    public Rectangle(String name, double length, double width) {
+        super(name);
+        this.length = length;
+        this.width = width;
+    }
+
+    public double getLength() {
+        return length;
+    }
+
+    public void setLength(double length) {
+        this.length = length;
+    }
+
+    public double getWidth() {
+        return width;
+    }
+
+    public void setWidth(double width) {
+        this.width = width;
+    }
+	
+    //计算矩形面积
+    @Override
+    public double area() {
+        return length*width;
+    }
+
+    //计算矩形周长
+    @Override
+    public double perimeter() {
+        return (length+width)*2;
+    }
+
+    //获取信息
+    @Override
+    public String getInfo() {
+
+        return getName()+"的长为："+length+
+                "\t\t宽为："+width+
+                "\t\t面积为："+area()+
+                "\t\t周长为："+perimeter();
+    }
+}
+```
+
+### Circle类（圆形）
+
+```
+package Day0505;
+
+public class Circle extends Graphic{
+    //半径
+    private double radius;
+
+    public Circle(){}
+
+    public Circle(String name, double radius) {
+        super(name);
+        this.radius = radius;
+    }
+
+    public double getRadius() {
+        return radius;
+    }
+
+    public void setRadius(double radius) {
+        this.radius = radius;
+    }
+
+    //计算圆面积
+    @Override
+    public double area() {
+        return Math.PI*radius*radius;
+    }
+
+    //计算圆周长
+    @Override
+    public double perimeter() {
+        return 2*Math.PI*radius;
+    }
+
+    //获取信息
+    @Override
+    public String getInfo() {
+        return getName()+"的半径为："+radius+"\t\t面积为："+area()+"\t\t周长为："+perimeter();
+    }
+}
+```
+
+### Test类（测试）
+
+```
+package Day0505;
+
+public class Test {
+    public static void main(String[] args) {
+        Graphic c1 = new Circle("圆形1",5);
+        System.out.println(c1.getInfo());
+
+        Graphic c2 = new Circle("圆形2",6);
+        System.out.println(c2.getInfo());
+
+
+        Graphic r1 = new Rectangle("矩形1", 10,20);
+        System.out.println(r1.getInfo());
+
+        Graphic r2 = new Rectangle("矩形2",15,20);
+        System.out.println(r2.getInfo());
+        System.out.println();
+
+        getArea(c1,c2);
+        getArea(c1,r1);
+        getArea(c2,r1);
+        getArea(c2,r2);
+
+        System.out.println();
+
+        getPerimeter(c1,c2);
+        getPerimeter(c1,r1);
+        getPerimeter(c2,r1);
+        getPerimeter(c2,r2);
+
+    }
+    
+    //判断面积大小
+    public static void getArea(Graphic a,Graphic b){
+        if(a.area()>b.area()){
+            System.out.println(a.getName()+"的面积大于"+b.getName());
+        }else{
+            System.out.println(b.getName()+"的面积大于"+a.getName());
+        }
+
+    }
+    
+	//判断周长大小
+    public static void getPerimeter(Graphic a ,Graphic b){
+        if(a.perimeter()>b.perimeter()){
+            System.out.println(a.getName()+"的周长大于"+b.getName());
+        }else{
+            System.out.println(b.getName()+"的周长大于"+a.getName());
+        }
+    }
+}
+```
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