JAVA自定义异常 JAVA自定义异常使用方法实例详解

public class Work2 {

 public static void main(String[] args) {
  ExceptionGenerator exceptionGenerator = new ExceptionGenerator();

  //处理第一种自定义编译时异常
  try {
   exceptionGenerator.genFirstException();
  } catch (MyFirstException e) {
   e.printStackTrace();
  }

  //处理第二种自定义运行时异常
  try {
   exceptionGenerator.genSecondException();
  } catch (MySecondException e) {
   e.printStackTrace();
  }

  //处理第三种自定义编译时异常
  try {
   exceptionGenerator.genThirdException();
  } catch (MyThirdException e) {
   e.printStackTrace();
  }
 }

}

class ExceptionGenerator {

 //抛出第一种编译时异常
 public void genFirstException() throws MyFirstException {
  throw new MyFirstException("第一种编译时类型的异常");
 }

 //抛出第二种运行时异常
 public void genSecondException() {
  throw new MySecondException("第二种运行时类型的异常");
 }
 //抛出第二种编译时异常
 public void genThirdException() throws MyThirdException {
  throw new MyThirdException("第三种编译时类型的异常");
 }
}

/*
  第一种自定义编译时异常
 */
class MyFirstException extends Exception {

 public MyFirstException(String msg) {
  super(msg);
 }
}
/*
  第二种自定义运行时异常
 */
class MySecondException extends RuntimeException {
 public MySecondException(String msg) {
  super(msg);
 }
}
/*
  第三种自定义编译时异常
 */
class MyThirdException extends Exception {
 public MyThirdException(String msg) {
  super(msg);
 }
}