Java设置打开或保存文件对话框的文件类型-qincidong

设置打开或保存文件对话框的文件类型设置打开或保存文件对话框的文件类型 import java awt FlowLayout import java awt event ActionEvent import java awt event ActionListener import java io BufferedWriter import java io File import java io FileWriter import java io IOException import java util Vector import javax swing JButton import javax swing JComboBox import javax swing JFileChooser import javax swing JFrame import javax swing JLabel import javax swing LookAndFeel import javax swing UIManager import javax swing UnsupportedLookAndFeelException import javax swing filechooser FileNameExtensionFilter 1 设置打开或保存文件时弹出的对话框的文件类型选择 2 外观选择 author EX QINCIDONG001 public class FileSaveExtensionChooser extends JFrame private JButton btn new JButton 保存文件 private JComboBox laf private Vector supportedLookAndFeel new Vector static class SupportedLaF String name LookAndFeel laf SupportedLaF String name LookAndFeel laf this name name this laf laf public String toString return name public FileSaveExtensionChooser setSize 300 200 setVisible true setLocationRelativeTo null setLayout new FlowLayout add btn add new JLabel 选择外观 setLookAndFeel add laf setDefaultCloseOperation DISPOSE ON CLOSE btn addActionListener new ActionListener public void actionPerformed ActionEvent arg0 String msg Hello World JFileChooser jfc new JFileChooser FileNameExtensionFilter fnef new FileNameExtensionFilter TXT and INI Files txt ini txt ini FileNameExtensionFilter txt new FileNameExtensionFilter TXT Files txt txt FileNameExtensionFilter ini new FileNameExtensionFilter INI Files ini ini jfc addChoosableFileFilter fnef jfc addChoosableFileFilter txt jfc addChoosableFileFilter ini jfc setDialogType JFileChooser SAVE DIALOG int res jfc showSaveDialog FileSaveExtensionChooser this if res JFileChooser APPROVE OPTION File file jfc getSelectedFile System out println file getAbsolutePath try BufferedWriter bw new BufferedWriter new FileWriter file bw write msg bw flush bw close System out println File Save Finished catch IOException e TODO Auto generated catch block e printStackTrace laf addActionListener new ActionListener public void actionPerformed ActionEvent arg0 SupportedLaF slaf SupportedLaF laf getSelectedItem try UIManager setLookAndFeel slaf laf System out println Set LookAndFeel To slaf name catch UnsupportedLookAndFeelException e TODO Auto generated catch block e printStackTrace pack public void setLookAndFeel UIManager LookAndFeelInfo installedLafs UIManager getInstalledLookAndFeels for UIManager LookAndFeelInfo lafInfo installedLafs try Class lnfClass Class forName lafInfo getClassName LookAndFeel laf LookAndFeel lnfClass newInstance if laf isSupportedLookAndFeel String name lafInfo getName supportedLookAndFeel add new SupportedLaF name laf catch Exception e continue laf new JComboBox su