Absolutely, you can replicate Microsoft Word's black theme effect for your Apache POI XWPFTable. This involves setting a black cell background, white text for readability, and white borders to maintain table structure. Here's how to modify your existing code:

Step-by-Step Implementation #

First, here's your original code updated with the black theme styling:

table = ForensicExpertWitnessReport_doc.insertNewTbl(cursor);
// Create first row of table
// File Name
XWPFTableRow tableRowOne = table.getRow(0);
tableRowOne.getCell(0).setText("File Name");
tableRowOne.addNewTableCell();
if (filename != null) {
    tableRowOne.getCell(1).setText(filename);
}

// --- Start of Black Theme Styling ---
// 1. Set table borders to white for visibility against black background
CTTblPr tblPr = table.getCTTbl().getTblPr();
CTTblBorders tblBorders = tblPr.isSetTblBorders() ? tblPr.getTblBorders() : tblPr.addNewTblBorders();

// Define white border properties (1pt thickness)
CTBorder border = CTBorder.Factory.newInstance();
border.setColor("FFFFFF"); // White hex code
border.setSz(new BigInteger("8")); // 1pt = 8 units in Apache POI
border.setVal(STBorder.SINGLE);

// Apply border to all table sides and internal lines
tblBorders.setTop(border);
tblBorders.setBottom(border);
tblBorders.setLeft(border);
tblBorders.setRight(border);
tblBorders.setInsideH(border);
tblBorders.setInsideV(border);

// 2. Style each cell with black background and white text
for (XWPFTableRow row : table.getRows()) {
    for (XWPFTableCell cell : row.getTableCells()) {
        // Set cell background to solid black
        CTTc cttc = cell.getCTTc();
        CTTcPr ctTcPr = cttc.isSetTcPr() ? cttc.getTcPr() : cttc.addNewTcPr();
        CTShd ctShd = ctTcPr.isSetShd() ? ctTcPr.getShd() : ctTcPr.addNewShd();
        ctShd.setFill("000000"); // Black hex code
        ctShd.setVal(STShd.CLEAR); // Use solid fill

        // Set all text in the cell to white
        for (XWPFParagraph para : cell.getParagraphs()) {
            for (XWPFRun run : para.getRuns()) {
                run.setColor("FFFFFF"); // White hex code
                // Optional: Make text bold for better contrast
                // run.setBold(true);
            }
        }
    }
}
// --- End of Black Theme Styling ---

Key Details Explained #

• White Borders: We set the table borders to white so they're visible against the black background. The size 8 corresponds to 1 point (the standard border thickness in Word).
• Black Cell Background: Using CTShd, we apply a solid black fill to each cell. The setVal(STShd.CLEAR) ensures the fill is solid rather than patterned.
• White Text: Every text run in each cell is set to white to ensure readability against the dark background. You can optionally enable bold text for even better contrast.

Important Note #

If you add additional rows or cells to the table later, you'll need to apply the same styling to those new elements. You could wrap the cell styling logic in a helper method to reuse it easily.

内容的提问来源于stack exchange，提问作者Polarbearz