java.util.Properties load/store, get/set

PropertiesLoadStore.scala

// java.util.Properties load/store, get/set

import java.io._
import java.util.{Date, Properties}
import org.apache.commons.io.IOUtils

object PropertiesLoadStore {
  def main(args: Array[String]) {
    val configFile = new File("PropertiesLoadStore.properties")

    val config = new Properties
    // load
    if (configFile.exists) {
      var in: InputStream = null
      try {
        in = new FileInputStream(configFile)
        config.loadFromXML(in)
      } catch {
        case e: IOException => e.printStackTrace
      } finally {
        IOUtils.closeQuietly(in)
      }
    }

    // get
    println(config.getProperty("言語"))
    println(config.getProperty("updatedAt"))

    // set
    config.setProperty("言語", "日本語")
    config.setProperty("updatedAt", new Date().toString)

    // store
    var out: OutputStream = null
    try {
      out = new FileOutputStream(configFile)
      config.storeToXML(out, "Properties test")
    } catch {
      case e: IOException => e.printStackTrace
    } finally {
      IOUtils.closeQuietly(out)
    }
  }
}