[تنبيه - عنوان غير مناسب : ]أرجو المساعدة يا اخوان بهذا البرنامج

import java.util.ArrayList;

public class while6 {

public static void main (String args []) {

int i = 1;
int c90 = 0, c80 = 0, c70 = 0, c60 = 0, failed = 0;
ArrayList<Integer> listC90 = new ArrayList<Integer>();
ArrayList<Integer> listC80 = new ArrayList<Integer>();
ArrayList<Integer> listC70 = new ArrayList<Integer>();
ArrayList<Integer> listC60 = new ArrayList<Integer>();
ArrayList<Integer> listFailed = new ArrayList<Integer>();

while(i != 0 ) {
String s = JOptionPane.showInputDialog("Enter number");
int x = Integer.parseInt(s);
if (x == 0)
i = 0;
if ( x >= 90 && x <= 100) {
listC90.add(x);
c90++;
} else if ( x >= 80 && x < 90) {
listC80.add(x);
c80 ++;
} else if ( x >= 70 && x < 80) {
listC70.add(x);
c70 ++;
} else if ( x >= 60 && x < 70) {
listC60.add(x);
c60 ++;
} else if ( x < 60) {
listFailed.add(x);
failed ++;
}
}
System.out.println("A "+ c90 + " - " + listC90);
System.out.println("B "+c80 + " - " + listC80);
System.out.println("C "+c70 + " - " + listC60);
System.out.println("D "+c60 + " - " + listC80);
System.out.println("F "+failed + " - " + listFailed);
}
}

 import javax.swing.*;

public class while6 {

public static void main (String args []) {

int i = 1;
int c90 = 0, c80 = 0, c70 = 0, c60 = 0, failed = 0;
String strC90 = "", strC80 = "", strC70 = "", strC60 = "", strFailed = "";

while(i != 0 ) {
String s = JOptionPane.showInputDialog("Enter number");
int x = Integer.parseInt(s);
if (x == 0)
i = 0;
if ( x >= 90 && x <= 100) {
strC90 += " " + x;
c90++;
} else if ( x >= 80 && x < 90) {
strC80 += " " + x;
c80 ++;
} else if ( x >= 70 && x < 80) {
strC70 += " " + x;
c70 ++;
} else if ( x >= 60 && x < 70) {
strC60 += " " + x;
c60 ++;
} else if ( x < 60) {
strFailed += " " + x;
failed ++;
}
}
System.out.println("A "+ c90 + " - " + strC90);
System.out.println("B "+c80 + " - " + strC80);
System.out.println("C "+c70 + " - " + strC70);
System.out.println("D "+c60 + " - " + strC60);
System.out.println("F "+failed + " - " + strFailed);
}
}

import javax.swing.*;