update,

it114105/itp3914/Lab11/ques_source/Ex3/Triangle.java

@@ -0,0 +1,24 @@
+class Triangle {
+	private int base;
+	private int height;
+ 
+	public Triangle() {
+		base = 0;
+		height = 0;
+	}
+ 
+	public Triangle(int base, int height) {
+		this.base = base;
+		this.height = height;
+	}
+ 
+	public void printThis() {
+		System.out.println(this);
+	}
+ 
+	public static void main(String [] args) {
+		Triangle t = new Triangle(1, 2);
+		System.out.println(t);
+		t.printThis();
+	}
+}