Java file Selection JFileChooser use example

the use of the JFileChooser class is very simple, mainly for the setting of some properties, and for the use of file filters.

[Java]

2. import Javax.swing.JFileChooser;

6. Public class Filechooser {

8. Public Static void Main (string[] args)

10. {

12. JFileChooser FC = new jfilechooser ("D:");

14. //Can be multi -selected

16. Fc.setmultiselectionenabled (false);

18. //Select mode to select files and folders

20. Fc.setfileselectionmode (jfilechooser.files_and_directories);

22. //Fc.setfileselectionmode (jfilechooser.files_only);  

24. //Fc.setfileselectionmode (jfilechooser.directories_only);  

26. //Set whether to show hidden files

28. Fc.setfilehidingenabled (true);

30. Fc.setacceptallfilefilterused (false);

32. //Set file filter

34. Fc.setfilefilter (new myfilter ("Java"));

36. Fc.setfilefilter (new myfilter ("zip"));

40. int returnvalue = Fc.showopendialog (null);

42. if (returnvalue = = jfilechooser.approve_option)

44. {

46. //fc.getselectedfile ()

48. //fc.getselectedfiles ()

50. }

52. }

54. }

[Java]

2. import java.io.File;

4. import Javax.swing.filechooser.FileFilter;

8. Public class Myfilter extends filefilter

10. {

14. Private String ext;

18. Public Myfilter (String extstring)

20. {

22. this. ext = extstring;

24. }

26. Public Boolean accept (File f) {

28. if (F.isdirectory ()) {

30. return true;

32. }

36. String extension = getextension (f);

38. if (Extension.tolowercase (). Equals (this. ext.tolowercase ()))

40. {

42. return true;

44. }

46. return false;

48. }

54. Public String GetDescription () {

56. return this. ext.touppercase ();

58. }

62. Private String GetExtension (File f) {

64. String name = F.getname ();

66. int index = name.lastindexof ('. ');

70. if (Index = =-1)

72. {

74. return "";

76. }

78. Else

80. {

82. return name.substring (index + 1). toLowerCase ();

84. }

86. }

88. }

Java file Selection JFileChooser use example