The Three Kinds of Exceptions 已检查异常 The first kind of exception is the checked exception. These are exceptional conditions that a well-written appli..

Interfaces in Java In the Java programming language, an interface is a reference type, similar to a class, that can contain only constants, method s..

Character Classes Construct Description [abc] a, b, or c (simple class)（a,b或c [^abc] Any character except a, b, or c (negation)（除a,b或c以外的任意字..

@Retention@Retention annotation specifies how the marked annotation is stored:（用于指明注解怎样存储 RetentionPolicy.SOURCE – The marked annotation is retaine..

VariablesTerminology“field” and “variable”4 kinds of variables: Instance Variables (Non-Static Fields)（实例变量 Class Variables (Static Fields)（类/静态变量 L..

启用BBR加速建议使用Ubuntu 16.04，因为BBR需要Linux kernel 4.9+ ，而且Ubuntu 16.04升级内核非常简单，Ubuntu 16.04启用BBR的流程如下： 运行apt install --install-recommends linux-generic-h..

使用Anisina主题没有内容（ ´_ゝ｀）没有任何内容