Question

我在第1行和第2行遇到错误。第1行说非法表达开头。我不明白为什么第1行是非法的

public class MyArt {
    public static void main(String argv[]) {
        MyArt m = new MyArt();
        m.amethod();
    }

    public void amethod() {
        static int i; // line 1
        System.out.println (i); // line 2
    }
}

Answer 1

你不能在方法中声明静态字段：

public class MyArt {

        public static void main(String argv[]) {
              MyArt m = new MyArt();
              m.amethod();
        }
        //you can very well have non-static method since you are 
        //calling it through MyArt object m
        public void amethod() { 

             int i=0; // REMOVED STATIC, otherwise program won't compile 
             System.out.println (i); // line 2, if not initialized compilation will fail where the variable is refrenced

        }
    }

Java ClassFormatError：方法“<error>”类具有非法签名</error>

1 个答案: