java中的变量压缩和扩展?

不确定您到底想做什么,但可以通过在调用main之前设置一个静态变量来实现:

NewOrphanedWindow.monitor = StaticClass.ValueToMonitorFromNowOn;

Thread monitor = new Thread(){
  public void run(){
    while(true){
      //check the value of StaticClass.ValueToMonitorFromNowOn
      try{
        Thread.sleep(1000); //sleep 1 sec
      } catch (InterruptedException e){
        break;
      }
    }
  }
}
monitor.start();

查找表是一种方法