test1child.java

java 教程相应的代码 全是自己写的内附注释 很容易看明白的

package demo.chapter05.access;

public class Test1Child extends Test1 {
	
	public void test() {
		this.att2 = 2;
		this.att3 = 3;
		this.att4 = 4;
	}

}