mycircle.java

java内部类的原代码

package secondpkg;
import firstpkg.MyShape;
import firstpkg.ShapeElement;
import firstpkg.MyPoint;


public class MyCircle extends MyShape implements CirclePrintable,firstpkg.ShapeElement{
    
    
    private static final String m_Introduction="The Class Name is 'MyCircle '";
    
    private MyPoint m_Centre;
    
    private int m_Radius;
    
    //构造函数是用了方法的重载
    public MyCircle() {
    }
    
    public MyCircle(int newX, int newY, int newRadius) {
        this.m_Centre=new MyPoint(newX,newY);      
        this.m_Radius=newRadius;
    }  
    
     public MyCircle(int newX, int newY, int newRadius,String newBackgroundColor,String newForeColor,int newLineBorder) {
        this.m_Centre=new MyPoint(newX,newY);  
        this.m_Radius=newRadius;
        this.m_BackGroundColor.setColorString(newBackgroundColor);
        this.m_ForeColor.setColorString(newForeColor);
        this.m_LineBroad=newLineBorder;
    }    
    
    
    
    public double getArea() {
        return ShapeElement.PAI*this.m_Radius*this.m_Radius;
    }
    
    double getDiameter() {
        return 2*MyCircle.PAI*this.m_Radius;
    }
    
    int getX() {
        return this.m_Centre.m_X;
    }
    
    void setX(int newX) {
        this.m_Centre.m_X=newX;
    }
    
    int getY() {
        return this.m_Centre.m_Y;
    }
    
    void setY(int newY) {
        this.m_Centre.m_Y=newY;
    }
    
    int getR() {
        return this.m_Radius;
    }
    
    void setR(int newR) {
        this.m_Radius=newR;
    }
    
    public static String getIntroduction() {
       //can't use this reference!!!
        
       return m_Introduction;
        
    }
    
    public void printR() {
        
        System.out.println("The Circle's R is:  "+this.m_Radius);
    }
    
    public void printX() {
        System.out.println("The Circle's X is:  "+this.m_Centre.m_X);
    }
    
    public void printY() {
        System.out.println("The Circle's Y is:  "+this.m_Centre.m_Y);
    }
    
    //printBackGroundColor  、printForeColor 和printLineBroad三个成员方法被MyCircle覆盖
      public void printBackGroundColor() {
        System.out.println("The BackGroundColor of MyCircle Object is:  "+this.m_BackGroundColor);
    }
    
    public void printForeColor() {
          System.out.println("The ForeColor of MyCircle Object is:  "+this.m_ForeColor);
   
    }
    
    public void printLineBroad() {
          System.out.println("The LineBroad of MyCircle Object is:  "+this.m_LineBroad);
   
    }
    
 
    
    
}