Drawing histogram Java

Sample input:
The QUICK BROWN FOX JUMPED over the LAZY DOG.
This is a EXAMPLE to TEST for YOUR
Histogram program.
Hello!
Sample output:

*

*

*                   *

*                   *     *   *

*                   *     *   *

*       *     *             *     *   *

*       *     * *     * *   *     * * *

*       *   * * *     * *   * *   * * * *

*     * * * * * *     * * * * *   * * * *     * *

* * * * * * * * * * * * * * * * * * * * * * * * * *

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

The title means to enter a uppercase string from the command line, and to draw the frequency of the occurrence of a character.

Import Java.io.bufferedreader;import java.io.ioexception;import java.io.inputstreamreader;import java.util.Arrays;       public class Main {public static void main (string[] args) throws NumberFormatException, IOException {       BufferedReader read = new BufferedReader (new InputStreamReader (system.in));       Int[] A = new int[26];       int tt;           for (int i = 0; i < 4; i++) {String str = read.readline ();              for (int j = 0; J < Str.length (); j + +) {tt = Str.charat (j)-' A ';              if (TT >= 0 && tt <=) {a[tt]++;       }}} int max = 0;           for (int i = 0; i < i++) {if (A[i] > max) {max = a[i];       }} char[][] c = new Char[max + 1][51];       for (int i = 0; i < Max + 1; i++) {Arrays.fill (C[i], ");           } for (int i = 0; i <; i++) {int h = a[i]; For(int j = 0; J < H; j + +)           {c[max-1-j][i * 2] = ' * ';       }} for (int i = 0; i < i++) {C[max][i * 2] = (char) (' A ' + i);           } for (int i = 0; i < Max + 1; i++) {String str = string.valueof (c[i]);           while (Str.endswith ("")) {str = str.substring (0, Str.length ()-1);       } System.out.println (str); }    }

Drawing histogram Java