Eclipse show me error The operator && is undefined for the argument type(s) boolean, int what's going wrong here and how to fix this?

Question

I have no idea of how to fix this, i am just a beginner

public static void main(String[]args){
    int op;

    Scanner teclado = new Scanner(System.in);

    System.out.println("porfavor ingrese un numero entre 1 y 6: ");

    op=teclado.nextInt();

    if(op >=1 && <=6){

        System.out.println("muchas gracias");

    }else{

        System.out.println("error,el numero debe estar entre 1 y 6");
    }
}

}

Answer 1

将if(op >=1 && <=6)更改为if(op >=1 && op<=6)

Answer 2

if(op >= 1 && op <= 6)

&& is an infix operator that takes boolean and boolean and returns boolean . <= is an infix operator that takes Number and Number and returns boolean . Your expression is missing an argument.

Answer 3

'&&'是一个逻辑运算符，适用于布尔逻辑，在这里您试图在运算符Ie（op（> = 1 && <= 6））上使用'&&'，这在Java中是未定义的用法。其他语言U只需将其更改为（op> = 1 && op <= 6），就可以将其应用于两个单独的条件检查，这将返回布尔值，并且'&&'可以应用于