Java I/O - 如何通过连接文件夹字符串创建文件路径

import java.io.File;

public class Main {

  public static void main(String[] args) {
    String filePath = File.separator + "Java" + File.separator + "IO";
    File file = new File(filePath);
    System.out.println(file.getPath());
  }
}