求问 看一下
public class HelloWorld {
static String className = "JAVA开发一班";
HelloWorld demo=new HelloWorld();
public static void main(String[] args) {
System.out.println(HelloWorld.className);
}
}要 HelloWorld demo=new HelloWorld();有什么用？？
public class HelloWorld {
static String className = "JAVA开发一班";
public static void main(String[] args) {
System.out.println(HelloWorld.className);
}
}
