Java

warning: [unchecked] unchecked cast
found   : T
required: java.lang.Comparable<T>
    Comparable<T> temp = (Comparable<T>) val;
1 warning

import java.util.Scanner;

public class firstsubroutine {
	public static void main (String[] args){
	    
		Scanner in = new Scanner(System.in);
        System.out.println("Enter the palindrome : ");
        System.out.println("? ");
        String line = in.next();    
        line = line.toLowerCase();

        if (isString(line) == true){
            //no need for this
        	//reverse(line);
            String reversed = reverse(line);
            
            //changed "==" to equals
            if (line.equals(reversed)){
                System.out.println ("Stripped : " + line);
                System.out.println ("Reversed : " + reversed);
                System.out.println ("This IS a palindrome.");
            }
            else{
                System.out.println ("Stripped : " + line);
                System.out.println ("Reversed : " + reversed);
                System.out.println ("This is NOT a palindrome.");
        }
        }  
    }

    // isString subroutine
    //return boolean
    static /*void*/boolean isString (String isStr){
    
        int i;
        
        //dont really need it
       // boolean isBoolean;
        
        for (i = 0; i < isStr.length(); i++){
            char ch =  isStr.charAt(i);
            //if (Character.isLetter(ch)){
                //isBoolean = true;        
            //}
            if (!Character.isLetter(ch))
            {
            	//not really a mistake
            	// but when its not letter than you are sure that
            	//it is not a string so return false quickly
                //isBoolean = false;
                
                return false;
            }
        }
        
        return true;
    }
    
    // reverse subroutine
    // u need to return string
    static /*void*/String reverse(String reStr){
    
        int i;
        String reverse = "";
        // try to FOLLOW THE LOOP
        for (i = reStr.length() - 1; i >= 0; i--/*++*/){
            reverse = reverse + reStr.charAt(i);
        }
        
        return reverse;
    }
}

navidnmc wrote:

where i can find one telnet client source code for interactive with any telnet server ?