Java时间转正常格式

我有 Java 时间1380822000000。我想转换为我可以阅读的内容：

import java.util.Date

object Ws1 {
  val a = new Date("1380822000000").toString()
}

导致异常

warning: there were 1 deprecation warning(s); re-run with -deprecation for detai
  ls
  java.lang.IllegalArgumentException
    at java.util.Date.parse(Date.java:615)
    at java.util.Date.<init>(Date.java:272)
    at .<init>(<console>:9)
    at .<clinit>(<console>)
    at .<init>(<console>:7)
    at .<clinit>(<console>)
    at $print(<console>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57
  )
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
  .java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:734)
    at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:983)
    at scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:573)
    at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:604)
    at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:568)
    at scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:745)
    at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:790)
    at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:702)
    at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:566)
    at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:573)
    at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:576)
    at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scal
  a:867)
    at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:822)
    at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:822)
    at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.
  scala:135)
    at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:822)
    at org.jetbrains.plugins.scala.worksheet.WorksheetRunner.main(WorksheetRunner.j
  ava:66)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57
  )
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
  .java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

如何将其转换为正常的人类表示？

您应该将该数字作为长整数传递以获得所需的结果，可以传递字符串但应该是可解析的。

val a = new Date(1380822000000L).toString();

看着那（这参考 http://docs.oracle.com/javase/1.7/docs/api/java/util/Date.html#Date%28long%29了解更多信息。