java的Path.resolve
时间: 2024-09-15 13:08:35 浏览: 47
`java.nio.Path.resolve()`是一个静态方法,它用于合并两个路径并返回一个新的路径表示它们的组合。这个方法对于处理文件系统路径特别有用,它可以解析相对路径,并将其相对于给定的基础路径进行调整。如果基础路径是绝对路径,那么结果就是另一个绝对路径;如果是相对路径,则会基于当前工作目录或者基础路径计算新的绝对路径。
例如:
```java
Path base = Paths.get("/home/user/documents");
Path child = Paths.get("file.txt");
Path resolved = Path.resolve(base, child); // 结果可能是 /home/user/documents/file.txt 或者 \home\user\documents\file.txt (取决于平台)
```
如果你需要合并多个路径,可以多次调用`resolve()`方法:
```java
Path path1 = Paths.get("dir1");
Path path2 = Paths.get("dir2", "dir3");
Path resolvedPath = path1.resolve(path2); // 将 dir1 和 dir2/dir3 连接起来
```
相关问题
java中 resolve.resolve
`resolve()` 方法是 Java 中 `Path` 接口的一个方法,用于解析路径。它将当前路径解析为绝对路径或相对路径。
在 Java 中,`Path` 接口表示一个文件或目录的路径。`resolve()` 方法将当前路径与给定路径进行连接,返回表示连接后路径的新 `Path` 对象。
例如,假设当前路径为 `C:\Users\username\Documents`,要连接的路径为 `temp\file.txt`,则调用 `resolve()` 方法后返回的路径为 `C:\Users\username\Documents\temp\file.txt`。
示例代码如下:
```java
Path currentPath = Paths.get("C:\\Users\\username\\Documents");
Path newPath = currentPath.resolve("temp\\file.txt");
System.out.println(newPath);
```
输出结果为:
```
C:\Users\username\Documents\temp\file.txt
```
Handler dispatch failed; nested exception is java.lang.UnsatisfiedLinkError: Failed to find the required library mclmcrrt9_4.dll on java.library.path. This library is typically installed along with MATLAB or the MATLAB Runtime. Its absence may indicate an issue with that installation or the current path configuration, or a mismatch with the architecture of the Java interpreter on the path. MATLAB Runtime version this component is attempting to use: 9.4. Java interpreter architecture: win64.
This error message indicates that the Java interpreter is unable to find the mclmcrrt9_4.dll library, which is required by MATLAB or the MATLAB Runtime.
To resolve this issue, you can try the following steps:
1. Check that MATLAB or the MATLAB Runtime is installed on your system. If it is not installed, you will need to install it to use the library.
2. Check that the path to the directory containing the mclmcrrt9_4.dll library is included in your java.library.path system variable. You can check this by opening a terminal or command prompt and running the following command:
```
echo %java.library.path%
```
If the path to the directory containing the library is not included in the output, you will need to add it to the java.library.path variable. You can do this by adding the following line to your system environment variables:
```
java.library.path=<path to directory containing mclmcrrt9_4.dll>
```
3. Check that the Java interpreter architecture matches the architecture of the mclmcrrt9_4.dll library. In this case, the error message indicates that the Java interpreter architecture is win64. You will need to ensure that the mclmcrrt9_4.dll library is also the 64-bit version that matches the architecture of the Java interpreter.
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