桦俊s
private 私有的
public公有的
void 无返回值
while 循环
true 对
false错
super 调用父类的同名方法
this 表示当前对象的引用
class 类
static 静态
null空
for循环
switch 循环
default 所有判断不匹配
if 判断
else 所有判断不匹配
try 可能出异常的代码块
catch用来处理异常
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