box.java

项目实战

public class Box{
	int height;
	int width;
	int length;
	int volume;
	Box(int height1,int width1,int length1){
		height=height1;
		width=width1;
		length=length1;
	}
	void calcVolume(){
		volume=width*height*length;
	}
	void print(){
		System.out.println("体积为"+volume);
	}
	public static void main(String[] args){
		Box objBox1=new Box(2,3,4);
		objBox1.calcVolume();
		objBox1.print();
		Box objBox2=new Box(1,5,6);
		objBox2.calcVolume();
		objBox2.print();
		Box objBox3=new Box(3,8,2);
		objBox3.calcVolume();
		objBox3.print();
	}
}