7.4 自定义异常类
定义异常类只需要继承Exception类即可。
例：自定义异常类
Class ： MyException
package limeThrowable._7_4;
public class MyException extends Exception { // 自定义异常类，继承Exception类
/**
*
*/
private static final long serialVersionUID = 1L;
// 构造方法接收异常信息
public MyException() {
super();
}
public MyException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
super(message, cause, enableSuppression, writableStackTrace);
}
public MyException(String message, Throwable cause) {
super(message, cause);
}
public MyException(String message) {
super(message);
}
public MyException(Throwable cause) {
super(cause);
}
}Class ：main
package limeThrowable._7_4;
public class DefaultException {
public static void main(String[] args) {
try{
throw new MyException("自定义异常。");
}catch (Exception e) {
System.out.println(e);
}
}
}Console ：
limeThrowable._7_4.MyException: 自定义异常。
7.5 断言
啦啦啦