自定义异常

package org.zln.exception;

/**
 * Created by coolkid on 2014/12/28 0028.
 */

class LanPingException extends Exception{
    LanPingException(String msg){
        super(msg);
    }
}

class MaoYanException extends Exception{
    MaoYanException(String msg){
        super(msg);
    }
}

class Computer{
    private int state = 2;
    public void run() throws LanPingException, MaoYanException {
        if (state == 1){
            throw new LanPingException("电脑蓝屏了");
        }else if (state == 2){
            throw new MaoYanException("电脑冒烟了");
        }
        System.out.println("电脑运行");
    }
}

class Teacher{
    private String name;
    private Computer computer;

    public Teacher(String name) {
        this.name = name;
        computer = new Computer();
    }

    public void prelect() throws LanPingException, MaoYanException {
        computer.run();
        System.out.println("讲课");
    }
}
public class ExceptionTest {
    public static void main(String[] args) throws LanPingException, MaoYanException {
        Teacher teacher = new Teacher("毕老师");
        teacher.prelect();
    }
}