Java Learning Path (i)--thinking in Java

Recently in the "tingking in Java" This book study, the second chapter exercises the topic of practice encountered a problem, No enclosing instance of type test1 is accessible. Must qualify the allocation with an enclosing instance of type test1 (e.g. X.new A () where X was an instance of Test1.

The reason for the error is that the main method is static and cannot access the dynamic class you define, that is, you cannot create a reference to the class. The correct method is simple, you can add static directly before the inner class to make it a static class.

? The source code is as follows:

public class Test1 {public    static class test{    int s;    char c;} public static void Main (string[] args) {    Test t = new test ();    System.out.println ("s" +t.s);    System.out.println ("C" +t.c);}    }

　　

Java Learning Path (i)--thinking in Java