Enter yopackage com.company;

/**
 * Created by Alex on 28.02.2015.
 */

public class MasiveDual {
    public static void main(String[] args) {
        int m[][] = new int[6][7];

        for (int i = 0; i < m.length; i++) {
            int Max = 0;
            for (int j = 0; j < m[i].length; j++) {
                m[i][j] = (int) (Math.random() * 10);
                if (Max < m[i][j]) {
                    Max = m[i][j];
                    m[i][j] = m[i][0];
                    m[i][0] = Max;
                }
            }
        }
        for (int i = 0; i < m.length; i++) {
            for (int j = 0; j < m[i].length; j++) {
                System.out.print(m[i][j] + " ");
            }
            System.out.println();
        }
    }
}ur code here