chapter07 : Triangle / TriangleMain

package org.joonzis.ex;
public class Ex07_Triangle {

	// Field
	private int width;
	private int height;
	
	// Constructor
	public Ex07_Triangle(){
		this(1, 1);
	}

	public Ex07_Triangle(int width, int height){
		this.width = width;
		this.height = height;
	}
	
	// Method
	 private double calcArea() {
		return width * height / 2.0;
	}
	
	public void output() {
		System.out.println("너비 : " + width);
		System.out.println("높이 : " + height);
		System.out.println("크기 : " + calcArea());
	}
}

package org.joonzis.ex;

public class Ex07_TriangleMain {

	public static void main(String[] args) {
		
		Ex07_Triangle semo1 = new Ex07_Triangle();
		Ex07_Triangle semo2 = new Ex07_Triangle(3, 5);
		
		semo1.output();
		System.out.println("----------------");
		semo2.output();
				
	}
}