如：文件filePath = "E:\\test\\test.dxf"

1.获取文件名

eg：获取 test.dxf

通过file对象

import java.io.File;public class test {  public static void main(String[] args) {    String filePath = "E:\\test\\test.dxf";    File tmpFile=new File(filePath);    String fileName=tmpFile.getName();    System.out.println(fileName);  }}

使用split

public class test {  public static void main(String[] args) {    String filePath = "E:\\test\\test.dxf";    //带扩展名的文件名    String temp[] = filePath.split("\\\\");    String fileName = temp[temp.length - 1];    System.out.println(fileName);  }}

使用substring

public class test {  public static void main(String[] args) {    String filePath = "E:\\test\\test.dxf";    String fileName = filePath.substring(filePath.lastIndexOf("\\")+1);    System.out.println(fileName);  }}

2.获取不带扩展名的文件名

eg：获取 test

使用substring

public class test {  public static void main(String[] args) {    String filePath = "E:\\test\\test.dxf";    String fileName = filePath.substring(filePath.lastIndexOf("\\")+1);    String name = fileName.substring(0,fileName.lastIndexOf("."));    System.out.println(name);  }}

3.扩展名

eg：获取 dxf

使用substring

public class test {  public static void main(String[] args) {    String filePath = "E:\\test\\test.dxf";    String fileName = filePath.substring(filePath.lastIndexOf("\\")+1);    String name = fileName.substring(filePath.lastIndexOf(".")+1);    System.out.println(name);  }}

或

public class test {  public static void main(String[] args) {    String filePath = "E:\\test\\test.dxf";    String fileName = filePath.substring(filePath.lastIndexOf("\\")+1);    String[] strArray = fileName.split("\\.");    int suffixIndex = strArray.length -1;    System.out.println(strArray[suffixIndex]);  }}

或

public class test {  public static void main(String[] args) {    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);  }}