This tutorial explains Java local class or method local inner class by example. Typically local classes or method local inner classes are defined in the body of a method. Local inner classes are local to code blocks, such as a method body, constructor, o
在使用Java局部内部类或者内部类时,若该类调用了所在方法的局部变量,则该局部变量必须使用final关键字来修饰,否则将会出现编译错误“Cannot refer to a non-final variable * inside an inner class defined in a different method” 下面通过一段代码来演示和分析原因。 public class Example { public static void ...
But even after the method completes, the inner class object created within it might still be alive on the heap if, for example, a reference to it was passed into some other code and then stored in an instance variable. Because the local variables aren't guaranteed to be alive as long as...
参考办法:http://stackoverflow.com/questions/1299837/cannot-refer-to-a-non-final-variable-inside-an-inner-class-defined-in-a-differen
在使用Java局部内部类或者内部类时,若该类调用了所在方法的局部变量,则该局部变量必须使用final关键字来修饰,否则将会出现编译错误“Cannot refer to a non-final variable * inside an inner class defined in a different method” 下面通过一段代码来演示和分析原因。
注意此处的一个小细节:若你自己运行这个案例你得到的参数名称可能是hello.args0等,而我此处是形参名。是因为我使用Java8的编译参数:-parameters(此处说一点:若你的逻辑中强依赖于此参数,务必在你的maven中加入编译插件并且配置好此编译参数) 若需要校验方法返回值,改写如下: ...
In MATLAB, type: out = javaMethod('methodname','com.ams.MyClass$MyInnerClass',arg) Input Arguments collapse all MethodName—Nonstatic Java method string|character vector Nonstatic Java method name, specified as a string or character vector. ...
有时候我们打包apk时会开启混淆,简单做法有时候是这样: release { minifyEnabled true //前一部分代表系统默认的android程序的混淆文件,该文件已经包含了基本的混淆声明,后一个文件是自己的定义混淆文件 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 混淆文件我们也会参考官方模板...
java 更换皮肤问题Cannot refer to a non-final variable inside an inner class defined in a different method,遇到一个很奇怪的错误,想为动态生成的菜单项增加事件处理。大致代码如下:publicclassMainMenuextendsJFrameimplementsActionListener{privateString[]theme
This implementation simply returns null; if the programmer desires thread-local variables to have an initial value other than null, ThreadLocal must be subclassed, and this method overridden. Typically, an anonymous inner class will be used. Java documentation for java.lang.ThreadLocal.initialValue(...