Use of File selection box JFileChooser

Reprint other people's articles, for the Java File selection box JFileChooser make a simple note.

Usually we use JFileChooser to assist in the completion of file reading and writing.

The steps to use JFileChooser are as follows: 1. Declare a JFileChooser object 2. Add a file filter for it, of course this is not necessary. 3. Call its ShowDialog method and return an integer value, based on which you can determine the user's choice, and if the user does not select Cancel, then you can then obtain basic information about the selected file, such as the path, file name, and so on, based on JFileChooser.

JFileChooser filechooser = new JFileChooser ();  
Two ways to add a filter:  
filenameextensionfilter ff = new Filenameextensionfilter (null, "TXT");  
Filechooser.setfilefilter (FF);  
Law II:  
filechooser.addchoosablefilefilter (New Javax.swing.filechooser.FileFilter () {  
                      
@Override  
public String getdescription () {return  
    "*.txt";  
}  
                      
@Override Public  
Boolean accept (File arg0) {return  
                                arg0.getname (). EndsWith (". txt");  
            }  
);  

This completes the basic setup, below can use this to complete our request

int option = Filechooser.showopendialog (null);  
if (option = jfilechooser.approve_option) {  
//Get basic information  
System.out.println ("Path:" +filechooser.getselectedfile (). GetPath ());  
SYSTEM.OUT.PRINTLN ("Absolute path:" +filechooser.getselectedfile (). GetAbsolutePath ());  
System.out.println ("File name:" +filechooser.getselectedfile (). GetName ());  
String path = Filechooser.getselectedfile (). GetAbsolutePath ();  
  
Read into  
filereader freader = new FileReader (path);  
BufferedReader breader = new BufferedReader (freader);  
arraylist<string> data =  new arraylist<string> ();  
String row = null;  
while ((row = Breader.readline ())!=null) {  
    row = Row.replaceall ("\\s*", "");//Remove Space  
    data.add (row);  
}  
  

Transferred from http://miman2008.iteye.com/blog/816035. Add, note Import header file:

Import Javax.swing.JFileChooser;
Import Javax.swing.filechooser.FileNameExtensionFilter;