Eighth java jobs

I, entitled

Second, the source code

Juxing.java

/ * 
Create a new package zz, seeking to create a rectangular package perimeter Juxing class 
subclasses define another Zhengfang, inheritance Juxing parent class 
creates a square area demand method, a method of rewriting request square perimeter 
* / 

ZZ Package; 

 class Juxing {
     public  Double m; // Create member variables m, n-; 
    public  Double n-; 

    public  static  Double zhouchang ( Double m, Double n-) { // create a perimeter constructor 
        return ((n-m +) * 2 ); 
    } 

} 
 class Zhengfang the extends Juxing {
     public  static  Double Area ( Double m) {
        return (m*m);
    
    }
    public static double getzhouchang(double m,  double n) { 
        return (m *4);
}
}

Text1.java

/ * 
Create the same package main class Text1, 
create a new object Zhengfang; 
New Method for the area and perimeter requirements call Zhengfang 
output 
* / 


Package ZZ; 

Import java.util.Scanner; 

public  class Text1 { 

    
    public  static  void main (String [] args) { 
        the System. OUT .println ( " enter a square side length: " ); 
        Scanner Reader = new new Scanner (. the System in ); 
        Zhengfang ZF = new new Zhengfang (); 
        zf.m = reader.nextDouble (); 
        . System OUT .println ( "Area of the square " + (* zf.m zf.m)); 
        . The System OUT .println ( " square perimeter " + (* zf.m . 4 )); 
    } 

}

 

Third, the operating results