How do I insert an image into Excel using Java?

How do I insert an image into Excel using Java?

We do three things in this steps.

1. Read picture into InputStream from the file.
2. Convert the image into a byte array. Helper methods are available in org. apache. poi. util. IOUtils to do the conversion.
3. Add the image to the workbook using addPicture method, and specify the type of image.

Can images be added to Excel?

A. Yes, you can insert an image into an Excel cell as follows. Paste an image into Excel, then resize the image and drag and drop it on top of a cell, as pictured below.

How do you insert a picture into Excel poi?

Using Apache POI library it becomes easy to insert or add images into excel file. Images are part of the drawing support. To add an image just call createPicture() on the drawing patriarch. In this example we will insert or add two images of types png and jpg/jpeg.

How do I import a JPEG into Excel?

Insert Picture into a Cell in Excel

1. Go to the Insert tab.
2. Click on the Pictures option (it’s in the illustrations group).
3. In the ‘Insert Picture’ dialog box, locate the pictures that you want to insert into a cell in Excel.
4. Click on the Insert button.

How do you create a header in Excel in Java?

Apache POI Excel Header Example

1. package poiexample;
2. import java.io.FileOutputStream;
3. import java.io.OutputStream;
4. import org.apache.poi.hssf.usermodel.HSSFWorkbook;
5. import org.apache.poi.ss.usermodel.Cell;
6. import org.apache.poi.ss.usermodel.Header;
7. import org.apache.poi.ss.usermodel.Row;

How do I resize an image in Apache POI?

Good solution is to use resize() function with scale argument: double scale = 0.3; Picture pict = drawing. createPicture(anchor, pictureIdx); pict. resize(scale);

Why can’t I insert a picture into Excel?

missing? Click “For objects, show all” within the Excel options. Within the Excel settings you can choose if objects (including charts and images) should be shown in your workbook. If this setting is set to hide all objects, you cannot insert any new objects so that the buttons are greyed-out.

How do I bold a header in Excel?

There exists a method “setCellStyle” in the class Cell, that takes an object of type HSSFCellStyle , which we can use for formatting. You can do anything with HSSFCellStyle, and we are going to see how to make cell bold with HSSFCellStyle. Let us get started. Create a workbook and worksheet to start with.

How do I change the color of a cell in Excel in Java?

Apache POI Excel Cell Color Example

1. package poiexample;
2. import java.io.FileNotFoundException;
3. import java.io.FileOutputStream;
4. import java.io.IOException;
5. import java.io.OutputStream;
6. import org.apache.poi.ss.usermodel.Cell;
7. import org.apache.poi.ss.usermodel.CellStyle;

How do you change the width of a cell in Excel in Java?

Setting the Width of a Column Set the width of a column by calling the Cells collection’s setColumnWidth method. The setColumnWidth method takes the following parameters: Column index, the index of the column that you’re changing the width of. Column width, the desired column width.