java 入门测试代码(二)

package com.company;// 这里用了java包引用的语法
import com.apple.CBca;import java.awt.*;
import java.io.*;public class Main {public enum Note {MIDDLE_C, C_SHARP, B_FLAT; // Etc.}static void common_test() {CBca b = new CBca();b.test(1);CAbc abc = new CAbc();abc.test(12);int c = CAbc.add(1, 2);int a = 0;System.out.format("output:%d\n", c);abc.set(100);abc.set(1.1);///// 枚举的调用abc.set(CAbc.Person_Enum.e_B);// 打印枚举的结果for (CAbc.Person_Enum ea : CAbc.Person_Enum.values()) {System.out.format("enum name:%s value:%d\n", ea.name(),ea.ordinal());}// 打印单个的结果System.out.format("enum:%s %d\n", CAbc.Person_Enum.e_C.name(),CAbc.Person_Enum.e_C.ordinal());int out = abc.get();System.out.format("getvalue:%d %d arraysize:%d\n", out, abc.m_c, abc.m_array[2]);}// 组合的使用static void test() {class Engine {public void start() {}public void rev() {}public void stop() {}}class Wheel {public void inflate(int psi) {}}class Window {public void rollup() {}public void rolldown() {}}class Door {public Window window = new Window();public void open() {}public void close() {}}class Car {public Engine engine = new Engine();public Wheel[] wheel = new Wheel[4];public Doorleft = new Door(),right = new Door(); // 2-doorpublic Car() {for (int i = 0; i < 4; i++)wheel[i] = new Wheel();}}Car car = new Car();car.left.window.rollup();car.wheel[0].inflate(72);}// 调用顺序测试static void test2() {class Meal {Meal() {System.out.println("Meal()");}}class Bread {Bread() {System.out.println("Bread()");}}class Cheese {Cheese() {System.out.println("Cheese()");}}class Lettuce {Lettuce() {System.out.println("Lettuce()");}}class Lunch extends Meal {Lunch() {System.out.println("Lunch()");}}class PortableLunch extends Lunch {PortableLunch() {System.out.println("PortableLunch()");}}// 最下层，第二层，现在的层PortableLunch p = new PortableLunch();System.out.println("end!");}// 多态测试static void test3() {class Instrument {void play(Note n) {System.out.println("Instrument.play() " + n);}String what() {return "Instrument";}void adjust() {System.out.println("Adjusting Instrument");}}class Wind extends Instrument {void play(Note n) {System.out.println("Wind.play() " + n);}String what() {return "Wind";}void adjust() {System.out.println("Adjusting Wind");}}class Percussion extends Instrument {void play(Note n) {System.out.println("Percussion.play() " + n);}String what() {return "Percussion";}void adjust() {System.out.println("Adjusting Percussion");}}class Stringed extends Instrument {void play(Note n) {System.out.println("Stringed.play() " + n);}String what() {return "Stringed";}void adjust() {System.out.println("Adjusting Stringed");}}class Brass extends Wind {void play(Note n) {System.out.println("Brass.play() " + n);}void adjust() {System.out.println("Adjusting Brass");}}class Woodwind extends Wind {void play(Note n) {System.out.println("Woodwind.play() " + n);}String what() {return "Woodwind";}}Instrument[] orchestra = {new Wind(),new Percussion(),new Stringed(),new Brass(),new Woodwind()};for (Instrument i : orchestra)i.play(Note.MIDDLE_C);}// 画画接口interface IDraw{int VALUE = 5; // static & finalvoid play(Note n); // Automatically publicvoid draw();}// 游泳接口interface ISwim{void swim();}// 接口测试static void test4(){// 这些接口都是要实现,这里是两个接口class John implements IDraw,ISwim{public String toString() { return "Jonh class"; }public void play(Note n){System.out.println(this + ".play() " + n);}public void draw(){System.out.println(this + ".draw()");}public void swim(){System.out.println(this+"--swim");}}// 每个类的接口方法都要实现，这里是两个接口class Nick implements IDraw,ISwim{public String toString() { return "Nick class"; }public void play(Note n){System.out.println(this + ".play() " + n);}public void draw(){System.out.println(this + ".draw()");}public void swim(){System.out.println(this + "--swim");}}John j = new John();Nick c = new Nick();j.draw();j.swim();System.out.println( "string--:" + j );c.draw();c.swim();System.out.println( "string--:" + c );}public static void main(String[] args){common_test();test();test2();test3();test4();}
}

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