Check Character in java

package homework;

import java.io.*;
public class Topic2 {
    public static void main(String[] args) throws IOException{
            System.out.print("Input one character ");
            char ch = (char)System.in.read();
            if((int)ch >=65 && (int)ch <=90)
                System.out.println(ch +" is upper-case");
            if((int)ch>=97 && (int)ch<=122)
                System.out.println(ch +" is lower-case");

    }
}