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import java.io.File;
public class Main {
public static void main(String[] argv) throws Exception {
File file = new File("D:\\test\\test.java");
String parentPath = file.getParent();
System.out.println(parentPath);
File parentDir = file.getParentFile();
System.out.println(parentDir);
parentPath = parentDir.getParent();
System.out.println(parentPath);
parentDir = parentDir.getParentFile();
System.out.println(parentDir);
parentPath = parentDir.getParent();
System.out.println(parentPath);
parentDir = parentDir.getParentFile();
System.out.println(parentDir);
}
}
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