Fjtd_2019的博客

原文链接原文：Buffered StreamsMost of the examples we’ve seen so far use unbuffered I/O. This means each read or write request is handled directly by the underlying OS. This can make a program much less e...

原文链接原文：Character StreamsThe Java platform stores character values using Unicode conventions. Character stream I/O automatically translates this internal format to and from the local character set. ...

原文链接原文：Byte StreamsPrograms use byte streams to perform input and output of 8-bit bytes. All byte stream classes are descended from InputStream and OutputStream.There are many byte stream classes....

原文链接原文：Unchecked Exceptions — The ControversyBecause the Java programming language does not require methods to catch or to specify unchecked exceptions (RuntimeException, Error, and their subclasse...

原文链接：原文：How to Throw ExceptionsBefore you can catch an exception, some code somewhere must throw one. Any code can throw an exception: your code, code from a package written by someone else such as...

来自JAVA官方文档原文：The Catch or Specify RequirementValid Java programming language code must honor the Catch or Specify Requirement. This means that code that might throw certain exceptions must be enclo...

来自JAVA官方关于异常的文档原文：What Is an Exception?The term exception is shorthand for the phrase “exceptional event.”Definition: An exception is an event, which occurs during the execution of a program, tha...

原文：What Is an Interface?As you’ve already learned, objects define their interaction with the outside world through the methods that they expose. Methods form the object’s interface with the outside ...

What Is Inheritance?Different kinds of objects often have a certain amount in common with each other. Mountain bikes, road bikes, and tandem bikes, for example, all share the characteristics of bicyc...

原文链接What Is a Class?In the real world, you’ll often find many individual objects all of the same kind. There may be thousands of other bicycles in existence, all of the same make and model. Each bic...

文章地址：来自oracle官方文档，关于JAVA对象的解释原文：What Is an Object?Objects are key to understanding object-oriented technology. Look around right now and you’ll find many examples of real-world objects: your dog, y...