Cannot applied to Boolean integer?

Question

import javax.swing.JOptionPane; /* Import this to use the interface */
public class aRRnum /* Class name */
   public static void main(String[] args)  /* Main name */
      int[] number = new int[5]; /* Declare array integer with size of 5 */
      for (int i = 0; i < number.length; i++) /* Use for loop to loop 5 times */
            /* Parse the number into Integer straightaway */
         number[i] = Integer.parseInt(JOptionPane.showInputDialog("Please enter the number:"));
         if ( 10 <= number[i] <= 100 ) {
              if ( number[i] != number[i] ){
                   for ( i = 0; i < number.length; i++){
                        JOptionPane.showMessageDialog(null, " The numbers are: " + number, " Answer ", JOptionPane.PLAIN_MESSAGE);
My error is
<= cannot applied to boolean integer for line
if ( 10 <= number[i] <= 100 ) {
I just want to make it If numbers entered are within 10 and 100, and that it cannot be the same number,
Print all the numbers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

   if ( 10 <= number[i] <= 100 ) the left part is first evaluated 10 <= number to a boolean value. This boolean can not be < then an int.
but you can have two expressions 10 <= number[i] && number[i] <= 100
the && means "and"
the expression( number[i] != number[i] ) will never be true...