Geração de gráficos utilizando o POI

HSSFRow rowGra = sheetGra.createRow((short)2);

rowGra.setHeight((short) 2800);

sheetGra.setColumnWidth((short) 2, (short) 9000);

HSSFPatriarch graphic = sheetGra.createDrawingPatriarch();
    drawLinesToCenter( graphic );
    drawManyLines( graphic );
    drawOval( graphic );
    drawPolygon( graphic );
    
    HSSFSimpleShape rect = graphic.createSimpleShape( new HSSFClientAnchor(100, 100, 900, 200, (short)0, 0, (short)0, 0) );
    rect.setShapeType(HSSFSimpleShape.OBJECT_TYPE_RECTANGLE);
    
    /*HSSFClientAnchor anchor = new HSSFClientAnchor( 0, 0, 1023, 255, (short) 1, 0, (short) 1, 0 );
    HSSFSimpleShape shape1 = graphic.createSimpleShape(anchor);
    shape1.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);*/
    
    HSSFTextbox textbox1 = graphic.createTextbox(
    new HSSFClientAnchor(0,0,0,0,(short)1,1,(short)2,2));
    textbox1.setString(new HSSFRichTextString("Isto é um teste") );
    
    /*HSSFSimpleShape s = graphic.createSimpleShape(anchor);
    s.setShapeType(HSSFSimpleShape.OBJECT_TYPE_OVAL);
    s.setLineStyleColor(10,10,10);
    s.setFillColor(90,10,200);
    s.setLineWidth(HSSFShape.LINEWIDTH_ONE_PT * 3);
    s.setLineStyle(HSSFShape.LINESTYLE_DOTSYS);*/

private static void drawPolygon( HSSFPatriarch patriarch )

{

//        HSSFClientAnchor a = new HSSFClientAnchor( 0, 0, 1023, 255, (short) 2, 2, (short) 3, 3 );

//        HSSFPolygon p = patriarch.createPolygon(a);

//        p.setPolygonDrawArea(100,100);

//        p.setPoints( new int[]{30, 90, 50}, new int[]{88, 5, 44} );

HSSFClientAnchor a = new HSSFClientAnchor();
     a.setAnchor( (short) 2, 2, 0, 0, (short) 3, 3, 1023, 255 );
     HSSFShapeGroup g = patriarch.createGroup( a );
     g.setCoordinates(0,0,200,200);
     HSSFPolygon p1 = g.createPolygon( new HSSFChildAnchor( 0, 0, 200, 200 ) );
     p1.setPolygonDrawArea( 100, 100 );
     p1.setPoints( new int[]{0, 90, 50}, new int[]{5, 5, 44} );
     p1.setFillColor( 0, 255, 0 );
     HSSFPolygon p2 = g.createPolygon( new HSSFChildAnchor( 20, 20, 200, 200 ) );
     p2.setPolygonDrawArea( 200, 200 );
     p2.setPoints( new int[]{120, 20, 150}, new int[]{105, 30, 195 } );
     p2.setFillColor( 255, 0, 0 );
 }

 private static void drawManyLines( HSSFPatriarch patriarch )
 {
     // Draw bunch of lines
     int x1 = 100;
     int y1 = 100;
     int x2 = 800;
     int y2 = 200;
     int color = 0;
     for (int i = 0; i < 10; i++)
     {
         HSSFClientAnchor a2 = new HSSFClientAnchor();
         a2.setAnchor((short) 2, 2, x1, y1, (short) 2, 2, x2, y2);
         HSSFSimpleShape shape2 = patriarch.createSimpleShape(a2);
         shape2.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
         shape2.setLineStyleColor(color);
         y1 -= 10;
         y2 -= 10;
         color += 30;
     }
 }

 private static void drawGrid( HSSFPatriarch patriarch )
 {
     // This draws a grid of lines.  Since the coordinates space fixed at
     // 1024 by 256 we use a ratio to get a reasonably square grids.

     double xRatio = 3.22;
     double yRatio = 0.6711;

     int x1 = 000;
     int y1 = 000;
     int x2 = 000;
     int y2 = 200;
     for (int i = 0; i < 20; i++)
     {
         HSSFClientAnchor a2 = new HSSFClientAnchor();
         a2.setAnchor((short) 2, 2, (int) ( x1 * xRatio ), (int) ( y1 * yRatio ),
                 (short) 2, 2, (int) ( x2 * xRatio ), (int) ( y2 * yRatio ));
         HSSFSimpleShape shape2 = patriarch.createSimpleShape(a2);
         shape2.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);

         x1 += 10;
         x2 += 10;
     }

     x1 = 000;
     y1 = 000;
     x2 = 200;
     y2 = 000;
     for (int i = 0; i < 20; i++)
     {
         HSSFClientAnchor a2 = new HSSFClientAnchor();
         a2.setAnchor((short) 2, 2, (int) ( x1 * xRatio ), (int) ( y1 * yRatio ),
                 (short) 2, 2, (int) ( x2 * xRatio ), (int) ( y2 * yRatio ));
         HSSFSimpleShape shape2 = patriarch.createSimpleShape(a2);
         shape2.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);

         y1 += 10;
         y2 += 10;
     }
 }

 private static void drawLinesToCenter( HSSFPatriarch patriarch )
 {
     // Draw some lines from and to the corners
     {
         HSSFClientAnchor a1 = new HSSFClientAnchor();
         a1.setAnchor( (short)2, 2, 0, 0, (short) 2, 2, 512, 128 );
         HSSFSimpleShape shape1 = patriarch.createSimpleShape(a1);
         shape1.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
     }
     {
         HSSFClientAnchor a1 = new HSSFClientAnchor();
         a1.setAnchor( (short)2, 2, 512, 128, (short) 2, 2, 1024, 0 );
         HSSFSimpleShape shape1 = patriarch.createSimpleShape(a1);
         shape1.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
     }
     {
         HSSFClientAnchor a1 = new HSSFClientAnchor();
         a1.setAnchor( (short)1, 1, 0, 0, (short) 1, 1, 512, 100);
         HSSFSimpleShape shape1 = patriarch.createSimpleShape(a1);
         shape1.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
     }
     {
         HSSFClientAnchor a1 = new HSSFClientAnchor();
         a1.setAnchor( (short)1, 1, 512, 100, (short) 1, 1, 1024, 0 );
         HSSFSimpleShape shape1 = patriarch.createSimpleShape(a1);
         shape1.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
     }

 }