要点
Paste_Image.png
代码
class AException extends Exception {
AException(String msg) {
super(msg);
}
}
class BException extends AException {
BException(String msg) {
super(msg);
}
}
class Fu {
private int state = 2; //状态值 1 ：正常
void method() throws AException {
if (state == 2)
throw new AException("A异常");
System.out.println("fu method");
}
}
class Text {
void function(Fu f) {
try{
f.method();
}
catch(AException e) {
System.out.println(e.toString());
}
System.out.println("OVER");
}
}
class Zi extends Fu {
private int state = 3; //状态值 1 ：正常
void method() throws BException { //或者抛 AException
if (state == 3)
throw new BException("B异常");
System.out.println("zi method");
}
}
class ExceptionDemo7 {
public static void main(String[] args) {
Text t = new Text();
t.function(new Zi());
}
}
好好学java，天天哇哈哈