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    É裺gunΪ¸¸À࣬shootgunºÍpistolΪgunµÄ×ÓÀà¡£
    Java:
    class gun {
        void shoot() {
            System.out.println("gun shoot");
        }
    }
    class shootgun extends gun {
        void shoot() {
            System.out.println("shootgun shoot");
       }
    }
    class pistol extends gun {
       void shoot() {
            System.out.println("pistol shoot");
        }
    }
    C++:
    class gun
    {
        void shoot()
        {
            cout << "gun shoot" << endl;
        }
    };
    class shootgun : gun
    {
        void shoot()
        {
            cout << "shootgun shoot" << endl;
        }
    };
    class pistol : gun
    {
        void shoot()
        {
            cout << "pistol shoot" << endl;
      &n


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java ´íÎó´úÂëÌáʾ

 //=============================Êä³öÆæÊý
public class OddTest {
public static boolean isOdd(int i){
return i % 2 != 0; //±È½Ï i % 2 == 0;×¢£º -1%2 = -1
}
public static void main(String[] args) {
for(int i = -10; i <= 10; i++) {
System.out.println(isOdd(i));
}
}
}
// ......

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Java SWT ´°¿Ú¾ÓÖжÔÆë

public static void CentreWnd(Shell shell){
int width = shell.getMonitor().getClientArea().width;
int height = shell.getMonitor().getClientArea().height;
int x = shell.getSize().x;
int y = shell.getSize().y;
if (x > width) {
shell.getSize().x = width;
}
if (y > height) ......

java URI URL ¸öÈËÀí½â¡£

URI ÊÇ×ÊÔ´±êʶ·û¡£¾ÍÊÇÏ൱ÓÚÒ»¸öÈ˵ļÒͥסַ¡£
URLºÍURIÀàËÆ¡£ÊÇ×ÊÔ´¶¨Î»µÄ¡£ ºÍURI²»Í¬µÄ¾ÍÊÇURLÌṩÁË»ñÈ¡¶«Î÷µÄ·½·¨¡£
        java.io.InputStream l_urlStream;
       // Ò²¿ÉÒÔ»»³Éuri,È»ºóµ÷ÓÃuri.toURL
        ......

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