[mariie]

/**
* @(#)mimics.java
*
* mimics application
*
* @author
* @version 1.00 2012/8/16
*/

import java.util.*;
public class mimics {

public static void main(String[] args) {

int first=0;
int second=0;
char ope;
String rate=ope;


Scanner user=new Scanner(System.in);
System.out.println("input first and second number: " + first);
first=user.nextInt();
System.out.println("input first and second number: " + second);
second=user.nextInt();

System.out.println("input operator: " + rate);
rate=user.next();
ope=rate.charAt(0);







switch (ope) {

case 1:
System.out.println("Enter the number one=" + (first+second));
break;
case 2:
System.out.println("Enter the number two=" + (first-second));
break;
case 3:
System.out.println("Enetr the number three="+ (first*second));
break;
case 4:
System.out.println("Enter the number four="+ (first/second));
break;
default:
System.out.println("Invalid Entry!");


}

}
}

ERROR MESSAGE :

incompatible types

[g00se]

Quote

String rate = ope;

Makes no sense. Different types. Delete that line