Java Swing 自定义JFileChooser 之 设置打开窗口过滤器

 

FileFilter fileFilter = new ExtensionFilter("java",".java"); openFileChooser.addChoosableFileFilter(fileFilter); 

其中， openFileChooser是JFileChooser对象；ExtensionFilter 是自己定义的类

 

public class ExtensionFilter extends FileFilter { private String extensions[]; private String description; public ExtensionFilter(String description, String extension) { this(description, new String[] { extension }); } public ExtensionFilter(String description, String extensions[]) { this.description = description; this.extensions = (String[]) extensions.clone(); } public boolean accept(File file) { if (file.isDirectory()) { return true; } int count = extensions.length; String path = file.getAbsolutePath(); for (int i = 0; i < count; i++) { String ext = extensions[i]; if (path.endsWith(ext) && (path.charAt(path.length() - ext.length()) == '.')) { return true; } } return false; } public String getDescription() { return (description == null ? extensions[0] : description); } }