In Java, the class interface or enum expected error is a compile-time error. There can be one of the following reasons we get “class, interface, or enum expected” error in Java:
Case 1: Extra curly Bracket
Java
class Hello { public static void main(String[] args) { System.out.println("Helloworld"); }}} // extra bracket. |
In this case, the error can be removed by simply removing the extra bracket.
Java
class Hello { public static void main(String[] args) { System.out.println("Helloworld"); }} |
Case 2: Function outside the class
Java
class Hello { public static void main(String args[]) { System.out.println("HI"); }}public static void func() { System.out.println("Hello"); } |
In the earlier example, we get an error because the method func() is outside the Hello class. It can be removed by moving the closing curly braces “}” to the end of the file. In other words, move the func() method inside of Hello.
Java
class Hello { public static void main(String args[]) { System.out.println("HI"); } public static void func() { System.out.println("Hello"); }} |
Case 3: Forgot to declare class at all
There might be a chance that we forgot to declare class at all. We will get this error. Check if you have declared class, interface, or enum in your java file or not.
Case 4: Declaring more than one package in the same file
Java
package A;class A { void fun1() { System.out.println("Hello"); }}package B; //getting class interface or enum expectedpublic class B { public static void main(String[] args) { System.out.println("HI"); }} |
We can not put different packages into the same source file. In the source file, the package statement should be the first line.
Java
package A;class A { void fun1() { System.out.println("Hello"); }}public class B { public static void main(String[] args) { System.out.println("HI"); }} |