Java关键字

用于类和接口的声明：class, extends, implements, interface

包引入和包声明：import, package

数据类型：boolean, byte, char, short, int, long, float, double

某些数据类型的可选值：false, true, null

流程控制：default, return, if, else, for, switch, case, do, while, break, continue,

异常处理：try, catch, finally, throw, throws

修饰符：abstract, final, native, private, protected, public, static, static, synchronized, transient, volatile

操作符：instanceof

创建对象：new

引用：this, super

方法返回类型: void

Java保留字：const和goto