test.java

来自「关于java面向对象系统分析方面的课件」· Java 代码 · 共 16 行

public class Test {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Addition addition = new AdditionImpl1();
        addition.add(10, 20);

        addition = new AdditionImpl2();
        addition.add(10, 20);
    }

}