public class HelloWorld{
public static void main(String[] args) {
String hobby="慕课网";
System.out.println(hobby);
String hobby="woaifangfang";
String.out.println(hobby);
}
}
1.hobby变量值两个不能相同，2.最后一行System.out.println(hobby);
第六行String.out.println(hobby);改为System.out.println(hobby);