线程“main”中的异常 java.lang.RuntimeException：无法编译的源代码
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Exception in thread "main" java.lang.RuntimeException: Uncompilable source code
提问by user1869132
How can I call a non static method in main class.I am getting the folowing error in my sample console application
如何在主类中调用非静态方法。我在示例控制台应用程序中收到以下错误
Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - non-static method doSomthing() cannot be referenced from a static context
at sample.Main.main(Main.java:20)
and the code is,
代码是，
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
doSomthing();
System.out.print("From Main");
}
protected void doSomthing()
{
System.out.print("From Main doSomthing");
}
}
回答by someone
problem is you have used non static method in static method which is not allowed in java , change doSomthing() as static method
问题是您在静态方法中使用了 java 中不允许的非静态方法，请将 doSomthing() 更改为静态方法
protected static void doSomthing()
{
System.out.print("From Main doSomthing");
}
Or Create an object of Main class and call it
或者创建一个 Main 类的对象并调用它
public static void main(String[] args) {
Main myMain = new Main();
myMain.doSomthing();
System.out.print("From Main");
}
回答by Reimeus
You could create an instancefirst from your staticmainmethod:
您可以先从您的方法创建一个实例staticmain：
new Main().doSomthing();
回答by Helio Santos
You can't call a non staticmethod in main class, unless you instantiate one [Main class].
您不能在主类中调用非静态方法，除非您实例化一个 [Main class]。
回答by ZombieSpy
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Main main = new Main();
main.doSomthing();
System.out.print("From Main");
}
protected void doSomthing()
{
System.out.print("From Main doSomthing");
}
}
