这篇文章主要介绍了如何通过java获取文件名和扩展名,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下@H_403_1@

如：文件filePath = "E:\\test\\test.dxf"@H_403_1@

1.获取文件名@H_403_1@

eg：获取 test.dxf@H_403_1@

通过file对象@H_403_1@

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@H_403_1@

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@H_403_1@

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@H_403_1@

eg：获取 test@H_403_1@

使用substring@H_403_1@

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@H_403_1@

eg：获取 dxf@H_403_1@

使用substring@H_403_1@

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@H_403_1@

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@H_403_1@

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);
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。@H_403_1@