import org.apache.poi.sl.usermodel.TableCell;
import org.apache.poi.sl.usermodel.TextParagraph;
import org.apache.poi.xslf.usermodel.*;

import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Created by jchamarthi on 18/9/15.
 */
public class CreateTable {
  public static void main(String[] args) throws IOException {
    XMLSlideShow ppt = new XMLSlideShow();
    createTitleSlide(ppt);
    createTitleAndContentSlide(ppt);
    FileOutputStream out = new FileOutputStream(new File("table.pptx"));
    ppt.write(out);
    out.close();
  }

  private static void createTitleSlide(XMLSlideShow ppt) {
    XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0);
    XSLFSlide slide = ppt.createSlide(slideMaster.getLayout(SlideLayout.TITLE));
    //slide.getBackground().setFillColor(Color.BLUE);
    for(XSLFTextShape shape : slide.getPlaceholders()) {
      switch (shape.getTextType()) {
        case CENTERED_TITLE:
          shape.clearText();
          XSLFTextParagraph paragraph = shape.addNewTextParagraph();
          XSLFTextRun textRun = paragraph.addNewTextRun();
          textRun.setFontColor(Color.BLACK);
          textRun.setFontSize(24.00);
          textRun.setBold(true);
          textRun.setFontFamily("Arial");
          textRun.setText("Success Plan summary export when Status = Draft");
          break;
        case SUBTITLE:
          slide.removeShape(shape);
          break;
        default:
          break;
      }
    }
  }

  private static void createTitleAndContentSlide(XMLSlideShow ppt) {
    XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0);
    XSLFSlide slide = ppt.createSlide(slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT));

    for(XSLFTextShape shape : slide.getPlaceholders()) {
      switch (shape.getTextType()) {
        case TITLE:
          shape.clearText();
          XSLFTextParagraph paragraph = shape.addNewTextParagraph();
          paragraph.setTextAlign(TextParagraph.TextAlign.LEFT);
          XSLFTextRun textRun = paragraph.addNewTextRun();
          textRun.setFontColor(Color.BLACK);
          textRun.setFontSize(18.00);
          textRun.setBold(true);
          textRun.setFontFamily("Arial");
          textRun.setText("Success Plan Name - This can be of 80 characters. This can be of 80 characters");
          break;
        case CONTENT:
          slide.removeShape(shape);
          createTable(slide, 50, 100, 600, 100, 3, 2, false, false);
          createTable(slide, 50, 200, 600, 300, 10, 3, false, false);
          break;
        default:
          break;
      }
    }
  }

  private static void createTable(XSLFSlide slide, double x, double y, double w, double h, int numRows, int numColumns, boolean setBorder, boolean addHeader) {
    XSLFTable tbl = slide.createTable();
    tbl.setAnchor(new Rectangle2D.Double(x, y, w, h));

    //Header
    if(addHeader) {
      XSLFTableRow headerRow = tbl.addRow();
      for (int i = 0; i < numColumns; i++) {
        XSLFTableCell th = headerRow.addCell();
        XSLFTextParagraph p = th.addNewTextParagraph();
        p.setTextAlign(TextParagraph.TextAlign.LEFT);
        XSLFTextRun r = p.addNewTextRun();
        r.setText("Plan Header " + (i + 1));
        r.setBold(true);
        th.setBorderColor(TableCell.BorderEdge.top,Color.BLACK);
        th.setBorderColor(TableCell.BorderEdge.bottom,Color.BLACK);
        th.setBorderColor(TableCell.BorderEdge.left,Color.BLACK);
        th.setBorderColor(TableCell.BorderEdge.right,Color.BLACK);
      }
    }

    // rows
    for(int rownum = 0; rownum < numRows; rownum ++){
      XSLFTableRow tr = tbl.addRow();
     tr.setHeight(5);
      // header
      for(int i = 0; i < numColumns; i++) {
        XSLFTableCell cell = tr.addCell();
        if(rownum == 0 || setBorder) {
          cell.setBorderColor(TableCell.BorderEdge.top,Color.BLACK);
        }
        if(rownum == numRows - 1 || setBorder) {
          cell.setBorderColor(TableCell.BorderEdge.bottom,Color.BLACK);
        }
        cell.setBorderColor(TableCell.BorderEdge.left,Color.BLACK);
        cell.setBorderColor(TableCell.BorderEdge.right,Color.BLACK);
        XSLFTextParagraph p = cell.addNewTextParagraph();
        XSLFTextRun r = p.addNewTextRun();
        r.setText("Plan Status:::::::::::::::::::::::::::::::::::ggggggggggggggggggg");
        System.out.println( cell.getTextHeight());


      }
    }
  }
}

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Exception in thread "main" java.lang.NullPointerException
	at org.apache.poi.xslf.usermodel.XSLFTable.updateCellAnchor(XSLFTable.java:296)
	at org.apache.poi.xslf.usermodel.XSLFTableCell.getAnchor(XSLFTableCell.java:662)
	at org.apache.poi.sl.draw.DrawShape.getAnchor(DrawShape.java:146)
	at org.apache.poi.sl.draw.DrawTextParagraph.getWrappingWidth(DrawTextParagraph.java:422)
	at org.apache.poi.sl.draw.DrawTextParagraph.breakText(DrawTextParagraph.java:243)
	at org.apache.poi.sl.draw.DrawTextShape.drawParagraphs(DrawTextShape.java:158)
	at org.apache.poi.sl.draw.DrawTextShape.getTextHeight(DrawTextShape.java:219)
	at org.apache.poi.sl.draw.DrawTextShape.getTextHeight(DrawTextShape.java:201)
	at org.apache.poi.xslf.usermodel.XSLFTextShape.getTextHeight(XSLFTextShape.java:564)
	at CreateTable.createTable(CreateTable.java:117)
	at CreateTable.createTitleAndContentSlide(CreateTable.java:69)
	at CreateTable.main(CreateTable.java:19)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)