java 异常

异常例子

import java.io.*;
public class className
{
  public void deposit(double amount) throws RemoteException
  {
    // Method implementation
    throw new RemoteException();
  }
  //Remainder of class definition
}

异常的实质是什么?

实质就是一个获取堆栈的类,这个类特别的地方在于可以获取堆栈,核心也在于获取堆栈和捕获异常

checked exception

来源

The unchecked exception classes are the run-time exception classes and the error classes.

The checked exception classes are all exception classes other than the unchecked exception classes. That is, the checked exception classes are Throwable and all its subclasses other than RuntimeException and its subclasses and Error and its subclasses.

uncheckded exception就是运行时异常类和error类,其他都是checked exception