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JFileChooser is a standard dialog for selecting a file from the file system

import java.io.File; import javax.swing.JFileChooser; import javax.swing.filechooser.FileFilter; import javax.swing.filechooser.FileNameExtensionFilter; public class FileChooserDialog {   public static void main(String[] args) {     JFileChooser fileopen = new JFileChooser();     FileFilter filter = new FileNameExtensionFilter("c files", "c");     fileopen.addChoosableFileFilter(filter);     int ret = fileopen.showDialog(null, "Open file");     if (ret == JFileChooser.APPROVE_OPTION) {       File file = fileopen.getSelectedFile();       System.out.println(file);     }   } }