e026. getting and setting the modification time of a file or directory.txt

来自「这里面包含了一百多个JAVA源文件」· 文本 代码 · 共 17 行

This example gets the last modified time of a file or directory and then sets it to the current time. 
    File file = new File("filename");
    
    // Get the last modified time
    long modifiedTime = file.lastModified();
    // 0L is returned if the file does not exist
    
    // Set the last modified time
    long newModifiedTime = System.currentTimeMillis();
    boolean success = file.setLastModified(newModifiedTime);
    if (!success) {
        // operation failed.
    }

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