char 向上转型
import java.util.Timer;import java.util.TimerTask;class NvWa{public void find(short i){System.out.println("(short) i");}public void find(float i){System.out.println("(float) i");}public void find(int i){System.out.println("(int) i");}public void find(Integer i){System.out.println("(Integer) i");}}public class DemoTime {public static void main(String[] args) throws InterruptedException {/*System.out.println(" Thread main " + Thread.currentThread().getName());new Timer(false).schedule(new TimerTask(){@Overridepublic void run() {System.out.println(" >>>>>>>>>>> ");}},0);java.util.concurrent.TimeUnit.SECONDS.sleep(1);Thread.interrupted();new Thread().interrupt();new Thread().isInterrupted();new Thread().interrupted();System.out.println(" Thread main " + Thread.currentThread().getName() +" : End");*/new NvWa().find((char)19); //out print (int) i//char原生类型类型重载方法中 直接向上转型为int 原生类型//注释find(int i) 后new NvWa().find((char)19); //out print (float) i//这里的原来请用jdk1.4一下版本理解 (没有自动拆箱)}}