java - 运行时异常和错误 Catch or Specify Requirement

Question

我正在阅读 exceptions in java

我遇到了这个

Checked exceptions are subject to the Catch or Specify Requirement. All exceptions are checked exceptions, except for those indicated by Error, RuntimeException, and their subclasses.

我不明白。谁能告诉我这是什么意思？

Answer 1

Checked exceptions are subject to the Catch or Specify Requirement. All exceptions are checked exceptions, except for those indicated by Error, RuntimeException, and their subclasses.

它说所有异常都需要通过捕获它们来处理

try{
  call();
}catch(SomeException ex){
 //handling
}

或者通过扔回去

public void caller() 抛出 SomeException{ 称呼();

call(); 方法被声明为抛出 SomeException

公共(public)无效调用者(){ 称呼();

这不会编译，

有未检查的RuntimeException，不需要处理，主要是非预期的(有些是错误的)所以我们不必强行处理

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另见

• Checked vs Unchecked exception
• When to choose checked and unchecked exceptions
• Isn't an unchecked exception that is caught in a try block a checked exception in Java?