CREATE OR REPLACE PROCEDURE GRANT_SELECT AS

Alternative colour for java jtable

jTblRefe = new javax.swing.JTable(){public Component prepareRenderer
    (TableCellRenderer renderer,int Index_row, int Index_col)
    {
        Component comp = super.prepareRenderer(renderer, Index_row, Index_col);
        //even index, selected or not selected

        if (Index_row % 2 == 0 ) {
            comp.setBackground(new java.awt.Color(230,212,212));
        }
        else
        {
            comp.setBackground(Color.white);
        }

        return comp;
    }

    public boolean isCellEditable(int row,int column){
        return false;
    };

}
;

Check java jar application is already running.

ServerSocket ss;
try {
    ss = new ServerSocket(MY_PORT);
    // not already running.
} catch (BindException e) {
    // already running.
}

Steps.

1) open listning port.

2) check listning port alredy runnig. 

Good luck.