Java语言变量作用域的探讨

A Probe into Variable Scopes for Java Language

变量的生存期和作用域是程序中引用该变量的依据,本文主要探讨 Java语言中公有变量、静态变量、类的数据成员、方法的参数、异常处理参数和局部变量的作用域问题,给出了静态变量、类的数据成员变量和异常处理参数作用域的程序举例,说明其具体的应用方法。

In a program, variable is used on the basis of its life span and scope. This paper mainly discusses variable scopes for Java language, which fall into class scope, object scope, scope of method parameter, scope for exception handling parameter and local variable scope.