/** * 过程执行器 * * @author leizhimin 2014/8/7 17:15 */public class Test {    public static void main(String[] args) {        dotask(new Task(0));        System.out.println("------------------");        dotask(new Task(2));        System.out.println("------------------");        dotask(new Task(4));    }    private static void dotask(Task task) {        switch (task.getState()) {            case 0:                do1(task);                break;            case 1:                do2(task);                break;            case 2:                do3(task);                break;            case 3:                do4(task);                break;            case 4:                do5(task);                break;            default:                break;        }    }    private static void do1(Task task) {        System.out.println("do1...");        task.setState(1);        dotask(task);    }    private static void do2(Task task) {        System.out.println("do2...");        task.setState(2);        dotask(task);    }    private static void do3(Task task) {        System.out.println("do3...");        task.setState(3);        dotask(task);    }    private static void do4(Task task) {        System.out.println("do4...");        task.setState(4);        dotask(task);    }    private static void do5(Task task) {        System.out.println("do5...");        task.setState(5);        dotask(task);    }}class Task {    private int state;    Task(int state) {        this.state = state;    }    public int getState() {        return state;    }    public void setState(int state) {        this.state = state;    }}

do1...do2...do3...do4...do5...------------------do3...do4...do5...------------------do5...Process finished with exit code 0