java - 如何在java中解析文件名？

Question

我有一个java文件路径

/opt/test/myfolder/myinsidefolder/myfile.jar

我想将文件路径替换为这里的根路径将保持不变，但想要将文件名从 myfile.jar 更改为 Test.xml

/opt/test/myfolder/myinsidefolder/Test.xml

我如何在 Java 中执行此操作？

Answer 1

正确的做法是:

File myfile = new File("/opt/.../myinsidefolder/myfile.jar");
File test = new File(myfile.getParent(), "Test.xml");

或者，如果您更喜欢只使用字符串:

String f = "/opt/test/myfolder/myinsidefolder/myfile.jar";
f = new File(new File(f).getParent(), "Test.xml").getAbsolutePath();

System.out.println(f); // /opt/test/myfolder/myinsidefolder/Test.xml