java 临时片段

Posted 2021-05-07

class A
{
     int nonStaticVariable;
     static int staticVariable;

     static void staticMethod()
     {
          System.out.println(staticVariable);
     //   System.out.println(nonStaticVariable);
     }

     void nonStaticMethod()
     {
          System.out.println(staticVariable);
          System.out.println(nonStaticVariable);
     }
}

class MainClass
{
     public static void main(String[] args)
     {
          A.staticVariable = 10;
     //   A.nonStaticVariable = 10;
          A.staticMethod();
    //    A.nonStaticMethod();

          A a1 = new A();
          A a2 = new A();

          System.out.println(a1.nonStaticVariable);
          System.out.println(a1.staticVariable);
          a1.nonStaticMethod();
          a1.staticMethod();

          System.out.println(a2.staticVariable);
          a1.staticVariable = 20;
          System.out.println(a2.staticVariable);
     }
}