读写属性配置文件

package bww.bill;

import java.io.*;
import java.util.*;

public class xpack {
  private Properties ppt = new Properties();
  private String path = null, vi = "xpack - bi202010312337";

  public xpack(String path) {
    this.path = path;
  }

  public void set(Map<Object, Object> conf) {
    ppt.putAll(conf);

    try (OutputStream os = new FileOutputStream(path)) {
      if (path.toLowerCase().endsWith(".xml")) {
        ppt.storeToXML(os, vi);
      } else {
        ppt.store(os, vi);
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  public Map<Object, Object> get() {
    try (InputStream is = new FileInputStream(path)) {
      if (path.toLowerCase().endsWith(".xml")) {
        ppt.loadFromXML(is);
      } else {
        ppt.load(is);
      }
    } catch (Exception e) {
      e.printStackTrace();
    }

    return new HashMap<Object, Object>(ppt);
  }
}