java public class MyClass { int nonStaticVariable; public void nonStaticMethod() { System.out.println(nonStaticVariable); } public static void staticMethod() { // 错误:不能在静态方法中直接访问非静态变量 // System.out.println(nonStaticVariable); // 解决方法1:将变量声明为静态 // static int...
public class aa { public static void main(String args[]) { Zhui zui;GraphicObject tuxing;tuxing = new TiXing(2, 3, 4);System.out.println("梯形的面积是" + tuxing.getArea());zui = new Zhui(tuxing, 30);System.out.println("梯形底的锥的体积是" + zui.getVolum());tuxi...
可以的。类可以有内部类，具体问题。具体再追问。错误提示是说：非静态变量类型不能在静态上下文中引用。（1）你的；main方法是static的，即静态的。（2）如果你将类包含在里面的话，需要将printchar声明为静态的。才能在main方法中引用。首先楼上说的有歧义，如果在static方法中new 一个对象都不行的...
,会导致错误 nonStaticMethod(); // 错误:Non-static...【情况二】:在静态方法中引用了一个实例变量报错: Non-static variable 'instanceVariable' cannot be referenced from a static...staticMethod() { // 在静态方法中引用实例变量,会导致错误 System.out.println(instanceVariable); // 错误:Non-static...
Code: https://gist.github.com/aikar/2358353bd3033dea000a64d59baf5572 In Lombok state, I get: [ERROR] LootContext.java:[20,1] non-static variable entity cannot be referenced from a static context When I delombok the file, no error occurs...
If you declare a member class that does not require access to an enclosing instance, always put the static modifier in its declaration. Summary If a nested class needs to be visible outside of a single method or is too long to fit comfortably inside a method, use a member class. ...
SonarAnalyzer (Java) Constant/issue: 10min Public class variable fields do not respect the encapsulation principle and has three main disadvantages: Additional behavior such as validation cannot be added. The internal representation is exposed, and cannot be changed afterwards. ...
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。
Java Code: // Importing necessary Java utilities.importjava.util.*;// Define a class named Main.publicclassMain{// Main method to execute the program.publicstaticvoidmain(String[]args){// Declare and initialize a string variable.Stringstr1="gibblegabbler";// Print the original string.System....
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