时间：2020-10-18 11:10:21 | 栏目：JAVA代码 | 点击：次
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
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);
}
}