File Save in Java, Open File dialog box

1 Package com.soft.test;2 3 //Awt:filedialog class + FilenameFilter class can implement this function4 //Swing:jfilechooser class + FileFilter class can implement this function5 //6 //This class is used to test open files and save files in the dialog box7 8Import java.awt.*;//in order to use the layout manager9Import java.awt.Event.*;//used to handle eventsTenImport javax.swing.*;//The latest GUI components OneImport java.io.*;//for reading and writing files A  -  Public classFilechooser { -  the     PrivateJFrame frm; -     PrivateJButton Open; -     PrivateJButton Read; -     PrivateJPanel p; +     PrivateFile F; -     PrivateJFileChooser FC; +     Private intFlag; A  at      PublicFilechooser () { -frm =NewJFrame ("Java"); -Open =NewJButton ("Open"); -Read =NewJButton ("Read"); -p =NewJPanel (); -FC =NewJFileChooser (); in  -Container C =Frm.getcontentpane (); toC.setlayout (NewFlowLayout ()); +  - C.add (p); the p.add (open); * p.add (read); $ Panax Notoginseng         //Register button Event -Open.addactionlistener (Newaction ()); theRead.addactionlistener (Newaction ()); +  AFrm.setsize ( -, -); theFrm.setvisible (true); +         //Set the default shutdown action - frm.setdefaultcloseoperation (jframe.exit_on_close); $     } $  -     Private voidOpenFile ()//Open File -     { the         //set the title of the Open File dialog box -Fc.setdialogtitle ("Open File");Wuyi  the         //This shows the Open File dialog box -         Try { WuFlag =fc.showopendialog (frm); -}Catch(headlessexception head) { About  $System. out. println ("Open File Dialog error!"); -         } -  -         //If you press the OK button, you get the file.  A         if(Flag = =jfilechooser.approve_option) { +             //Get the file thef =fc.getselectedfile (); -System. out. println ("Open File----"+f.getname ()); $         } the     } the  the     Private voidReadFile ()//Save File the     { - String FileName; in  the         //set the title of the Save File dialog box theFc.setdialogtitle ("Save File"); About  the         //the dialog box for saving the file is displayed here the         Try { theFlag =fc.showsavedialog (frm); +}Catch(Headlessexception He) { -System. out. println ("Save File Dialog error!"); the         }Bayi  the         //If you press the OK button, you get the file.  the         if(Flag = =jfilechooser.approve_option) { -             //get the file you entered to save -f =fc.getselectedfile (); the             //Get file name theFileName =Fc.getname (f); the             //You can also use Filename=f.getname ();  theSystem. out. println (fileName); -         } the     } the  the     //button Listener class inner class94     classAction implements ActionListener { the          Public voidactionperformed (ActionEvent e) { the             //decide which button was clicked. the             if(E.getsource () = =Open)98 openFile (); About             Else if(E.getsource () = =Read) - readFile ();101         }102     }103 104      Public Static voidMain (string[] args) { the         NewFilechooser ();106     }107}

File Save in Java, Open File dialog box