构造方法

构造方法

public area(int a,intb){

A=a;

B=b;

}

area a=new area(5,6);

syso(" ssdad"+a.area());

package DemoArea2.copy;

import org.omg.PortableServer.POAPackage.ServantAlreadyActive;

public class area2 {
	private int A;
	private int B;
	private String Color;
	
	public area2(int a,int b){
		A=a;
		B=b;
	}
	
	int setarea(){
		return A*B;
	} 
	
}

　　

package DemoArea2.copy;

public class Mainarea2 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		area2 a2=new area2(3, 5);
		
		
		
		
		System.out.println("面积是"+a2.setarea());

	}

}