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byte b1 = 10;
byte b2 = 20;
byte b3 = b1 + b2; //Óï·¨´íÎó£¬ÀàÐͲ»Æ¥Åä
int n = b1 + b2; //»òÕß byte b3 = (byte)(b1 + b2);
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int n = -1;
boolean b1 = (n >= 0) && (n < 10);
boolean b2 = (n >= 0) & (n < 10);
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package thread;
public class ThreadTest {
public static void main(String args[])
{
//new TestThread ().start();
TestThread tt= new TestThread();//´´½¨TestThreadÀàµÄÒ»¸öʵÀý
Thread t= new Thread(tt);//´´½¨Ò»¸öThreadÀàµÄʵÀý
t.start();//ʹÏ߳̽øÈëRunnable״̬
new Thread(tt).star ......
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java ´úÂë
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList; ......