symbolic bar chart

public class graph {

    public static void main(String[] args) {
        String graphSymbol = "||||  ";
        String emptySymbol = "      ";
        int nimal[] = {40, 65, 70};
        int kamal[] = {100, 85, 50};
        int[][] students = {nimal, kamal};

        String subject[] = {"Math", "phy", "chem"};
        boolean[][] draw = new boolean[subject.length][students.length];

        int num = 100;
        for (int n = num; n > 0; n--) {

            for (int i = 0; i < subject.length; i++) {
                for (int j = 0; j < students.length; j++) {

                    boolean line = draw[i][j];
                    if (!line && students[j][i] == n) {
                        draw[i][j] = true;
                    }
                    System.out.print((line) ? graphSymbol : emptySymbol);
                    if (j == students.length - 1) {
                        System.out.print("    ");//gap between blocks
                    }
                }

            }
            System.out.println("");
        }
    }
}