Problème d'affichage de résultat

	int i =0;
		int []tab= new int[ch.length()] ;
		while (i<ch.length() && i<tab.length) {
			tab[i]=(int)(ch.charAt(i));
			System.out.print(tab[i]);
			i++;
			
		}

import java.util.Scanner;
public class TD5_ex1 {

	public static void main(String[] args) {
		String ch ;
		
		Scanner s = new Scanner(System.in);
		System.out.println("Entrer la chaine: ");
		ch=s.nextLine();
/*
		int i =0, j=0;
		int []tab= new int[ch.length()] ;
		while (i<ch.length()-1 && j<tab.length) {
			tab[j]=(int)(ch.charAt(i));
		}
		System.out.println(tab[j]);
*/
	int i =0;
		int []tab= new int[ch.length()] ;
		while (i<ch.length() && i<tab.length) {
			tab[i]=(int)(ch.charAt(i));
			System.out.print(tab[i]);
			i++;
			
		}
    }
}

&& i<tab.length

tab.length == ch.length()

i<ch.length()