Crear un JPanel desde cero??

[rogeliomx]

y el _jpanelcontenedor esta construido asi:

Código:

 _jpanelcontenedor.setBackground(new java.awt.Color(0, 0, 204));

        javax.swing.GroupLayout _jpanelcontenedorLayout = new javax.swing.GroupLayout(_jpanelcontenedor);
        _jpanelcontenedor.setLayout(_jpanelcontenedorLayout);
        _jpanelcontenedorLayout.setHorizontalGroup(
            _jpanelcontenedorLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 458, Short.MAX_VALUE)
        );
        _jpanelcontenedorLayout.setVerticalGroup(
            _jpanelcontenedorLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 297, Short.MAX_VALUE)
        );