1 回答Exception in thread "main" java.lang.Error: Unresolved compilation problem: The method printf(String, Object[]) in the type PrintStream is not applicable for the arguments (String, double) at MainClass.main(MainClass.java:16) 是什么意思

2 回答what is the point,god?

1 回答Multiple markers at this line - The serializable class HelloWorld does not declare a static final serialVersionUID field of type long - The public type HelloWorld must be defined in its own file - The type HelloWorld is already defined

5 回答what is the question's wrong public class HelloWorld{ public static void main(String[] args) { String a=“我愛慕課網”; String b=“idcbgp.cn”; system.out.println(a); system.out.println(b); } }

3 回答Multiple markers at this line - Syntax error on token ")", ; expected - void is an invalid type for the variable main - Syntax error on token "(", ; expected