Knowledgebase (2300)
This article will demonstrate how to set the zoom factor/percentage (such as default, 100 percent or any other zoom factors as required) and the viewer preference by using Spire.PDF for Java in Java applications.
Set the zoom factor
import com.spire.pdf.*;
import com.spire.pdf.actions.*;
import com.spire.pdf.general.*;
import java.awt.geom.*;
public class setZoomFactor {
public static void main(String[] args) {
//Load the sample document
PdfDocument doc = new PdfDocument();
doc.loadFromFile("Sample.pdf");
//Get the first page of PDF
PdfPageBase page = doc.getPages().get(0);
//Set pdf destination
PdfDestination dest = new PdfDestination(page);
dest.setMode(PdfDestinationMode.Location);
dest.setLocation(new Point2D.Float(-40f, -40f));
//Set zoom factor
dest.setZoom(0.8f);
//Set action
PdfGoToAction gotoAction = new PdfGoToAction(dest);
doc.setAfterOpenAction(gotoAction);
//Save pdf document
String output = "output/setZoomFactor.pdf";
doc.saveToFile(output);
}
}
Output:

Set the viewer preference
import com.spire.pdf.*;
public class viewerPreference {
public static void main(String[] args) {
//Load the sample document
PdfDocument doc = new PdfDocument();
doc.loadFromFile("Sample.pdf");
//Set viewer reference
doc.getViewerPreferences().setCenterWindow(true);
doc.getViewerPreferences().setDisplayTitle(false);
doc.getViewerPreferences().setFitWindow(false);
doc.getViewerPreferences().setHideMenubar(true);
doc.getViewerPreferences().setHideToolbar(true);
doc.getViewerPreferences().setPageLayout(PdfPageLayout.Two_Column_Left);
//Save pdf document
String output = "output/viewerPreference.pdf";
doc.saveToFile(output);
}
}
Output:

A workbook containing multiple worksheets helps to centrally manage relevant information, but sometimes we have to split the worksheets into separate Excel files so that individual worksheets can be distributed without disclosing other information. In this article, you will learn how to split Excel worksheets into separate workbooks in C# and VB.NET using Spire.XLS for .NET.
Install Spire.XLS for .NET
To begin with, you need to add the DLL files included in the Spire.XLS for .NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.XLS
Split Excel Sheets into Separate Files
The following are the main steps to split Excel sheets into separate workbooks using Spire.XLS for .NET.
- Create a Workbook object
- Load a sample Excel file using Workbook.LoadFromFile() method.
- Declare a new Workbook variable, which is used to create new Excel workbooks.
- Loop through the worksheets in the source document.
- Initialize the Workbook object, and add the copy of a specific worksheet of source document into it.
- Save the workbook to an Excel file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
using System;
namespace SplitWorksheets
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook object
Workbook wb = new Workbook();
//Load an Excel document
wb.LoadFromFile("C:\\Users\\Administrator\\Desktop\\data.xlsx");
//Declare a new Workbook variable
Workbook newWb;
//Declare a String variable
String sheetName;
//Specify the folder path which is used to store the generated Excel files
String folderPath = "C:\\Users\\Administrator\\Desktop\\Output\\";
//Loop through the worksheets in the source file
for (int i = 0; i < wb.Worksheets.Count; i++)
{
//Initialize the Workbook object
newWb = new Workbook();
//Remove the default sheets
newWb.Worksheets.Clear();
//Add the specific worksheet of the source document to the new workbook
newWb.Worksheets.AddCopy(wb.Worksheets[i]);
//Get the worksheet name
sheetName = wb.Worksheets[i].Name;
//Save the new workbook to the specified folder
newWb.SaveToFile(folderPath + sheetName + ".xlsx", ExcelVersion.Version2013);
}
}
}
}

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This article will show you how to use Spire.PDF for Java to draw superscript and subscript text to PDF file in Java applications.
Draw Superscript Text
import com.spire.pdf.*;
import com.spire.pdf.graphics.*;
import java.awt.*;
import java.awt.geom.*;
public class PdfSuperscriptText {
public static void main(String[] args) {
//Create a new PdfDocument instance
PdfDocument doc = new PdfDocument();
//Add a page to pdf
PdfPageBase page = doc.getPages().add();
//Set the font
PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("Arial", Font.PLAIN,14),true);
PdfSolidBrush brush = new PdfSolidBrush(new PdfRGBColor(Color.black));
//Set initial (x, y) coordinate
float x = 120f;
float y = 100f;
//Draw text string
String text = "Sample Text";
page.getCanvas().drawString(text, font, brush, new Point2D.Float(x, y));
//Measure the string
Dimension2D size = font.measureString(text);
x += size.getWidth();
//Draw the text string and set the format as Superscript
PdfStringFormat format = new PdfStringFormat();
format.setSubSuperScript(PdfSubSuperScript.Super_Script);
text = "Superscrip";
page.getCanvas().drawString(text, font, brush, new Point2D.Float(x, y), format);
//Save the document to file
String result="output/superScript.pdf";
doc.saveToFile(result);
}
}
Effective screenshot:

Draw Subscript Text
import com.spire.pdf.*;
import com.spire.pdf.graphics.*;
import java.awt.*;
import java.awt.geom.*;
public class PdfSubscriptText {
public static void main(String[] args) {
//Create a new PdfDocument instance
PdfDocument doc = new PdfDocument();
//Add a page to pdf
PdfPageBase page = doc.getPages().add();
//Set the font
PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("Arial", Font.PLAIN,14),true);
PdfSolidBrush brush = new PdfSolidBrush(new PdfRGBColor(Color.black));
//Set initial (x, y) coordinate
float x = 120f;
float y = 100f;
//Draw text string
String text = "Sample Text";
page.getCanvas().drawString(text, font, brush, new Point2D.Float(x, y));
//Measure the string
Dimension2D size = font.measureString(text);
x += size.getWidth();
//Draw the text string and set the format as Subscript
PdfStringFormat format = new PdfStringFormat();
format.setSubSuperScript(PdfSubSuperScript.Sub_Script);
text = "Subscrip";
page.getCanvas().drawString(text, font, brush, new Point2D.Float(x, y), format);
//Save the document to file
String result="output/subScript.pdf";
doc.saveToFile(result);
}
}
Output:
