publicclassfilename { publicstaticvoidmain(String[] args) { File file =newFile("/Users/pankaj/book.txt"); System.out.println("File extension is: "+ getFileExtension(file)); file =newFile("/Users/pankaj/header.png"); System.out.println("File extension is: "+ getFileExtension(file)); f...
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String newFileName = fileName.replace(".txt", ".newExtension");:将原来的后缀名替换为新的后缀名。 File newFile = new File(file.getParent(), newFileName);:创建新的文件对象。 boolean success = file.renameTo(newFile);:修改文件后缀名。 if (success) { System.out.println("File extension ch...
Returns the set of file name extensions files are tested against. StringtoString() Returns a string representation of theFileNameExtensionFilter. Methods inherited from class java.lang.Object clone,equals,finalize,getClass,hashCode,notify,notifyAll,wait,wait,wait ...
String filePath= "E:\\test\\test.dxf";String fileName= filePath.substring(filePath.lastIndexOf("\\")+1); System.out.println(fileName);String extension=fileName.substring(fileName.lastIndexOf(".")+1,fileName.length()); System.out.println(extension); ...
import org.apache.commons.io.FilenameUtils; public class FileExtensionExample { public static void main(String[] args) { String filename = "example.txt"; String extension = FilenameUtils.getExtension(filename); System.out.println("File extension: " + extension); } } 总结 以上三种方法都可以...
Class FileNameExtensionFilter java.lang.Object javax.swing.filechooser.FileFilter javax.swing.filechooser.FileNameExtensionFilter public final classFileNameExtensionFilterextendsFileFilter FileFilter的实现,使用指定的扩展集进行过滤。文件的扩展名是最后一个“。”之后文件名的一部分。名称不包含“。”的文件。没有文...
... 2 more Caused by: java.io.IOException: Cannot run program "C:\Java\jdk1.8.0_77\bin\java.exe" (in directory "D:\Work\FBXX"): CreateProcess error=206, The filename or extension is too long at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java...
String extension = "";int i = fileName.lastIndexOf('.');if (i > 0) { extension = ...
String filePath = "E:\\test\\test.dxf"; String fileName = filePath.substring(filePath.lastIndexOf("\\")+1); System.out.println(fileName); String extension=fileName.substring(fileName.lastIndexOf(".")+1,fileName.length()); System.out.println(extension); ...