Question

一个简单的java编程题，请大家帮帮忙！

编写一个class，内含good（），better（）。请在better（）中掷出你所定义的异常。在good（）中调用better（），并捕获其异常。接着在catch子句中掷出另一异常。

Answer 1

public class er{
public void good() throws [the other excpetion]{
try{
better();
}catch(Throwable e){
throw [the other excpetion]
}
}
public void better() throws [some class extends java.lang.Throwable]{
throw [some class extends java.lang.Throwable];
}
}
例如
public class er{
public void good() throws java.lang.IllegalAccessException{
try{
better();
}catch(java.sql.SQLException e){
throw new java.lang.IllegalAccessException("数据库错误");
}
}
public void better() throws java.sql.SQLException{
throw new java.sql.SQLException();
}
}

Answer 2

public class Test1 {

public void good() throws MyException {
try {
better();
} catch (Exception other_exception) {
other_exception.printStackTrace();
}
}

public void better() throws MyException {
throw new MyException("exception");
}

}
//自定义异常
public class MyException extends Exception {

public MyException(String msg){
super(msg);
}
public String toString()
return super.toString();
}
}

}