// For complete examples and data files, please go to https://github.com/aspose-slides/Aspose.Cells-for-Cloud
try {
    // Instantiate Aspose Storage API SDK
    StorageApi storageApi = new StorageApi(Configuration.apiKey, Configuration.appSID, true);
    // Instantiate Aspose Words API SDK
    CellsApi cellsApi = new CellsApi(Configuration.apiKey, Configuration.appSID, true);
    String input = "Sample1.xlsx";
    String output = "Sample2.xlsx";
    Path inputFile = Utils.getPath(SetChartTitle.class, input);
    Path outputFile = Utils.getPath(SetChartTitle.class, output);
    String sheet = "Sheet1";
    Integer chartIndex = 0;
    com.aspose.cells.model.Title body = new com.aspose.cells.model.Title();
    body.setHeight(15);
    body.setText("aspose");
    storageApi.PutCreate(input, null, Utils.STORAGE, inputFile.toFile());
    cellsApi.PutWorksheetChartTitle(input, sheet, chartIndex, Utils.STORAGE, Utils.FOLDER, body);
    com.aspose.storage.model.ResponseMessage sr = storageApi.GetDownload(input, null, Utils.STORAGE);
    Files.copy(sr.getInputStream(), outputFile, StandardCopyOption.REPLACE_EXISTING);
}
catch (Exception e) {
    e.printStackTrace();
}