ThisOperator3.java

public class Shape {
	int length;
	int width;
	public void setLength(int length) {
		// access the instance variable
		this.length = length;
	}
	public void setWidth(int width) {
		// access the instance variable
		this.width = width;
	}
	public void buildRectangle() {
		// access the instance member method
		this.setLength(5);
		this.setWidth(4);
	}
}