创建一个Activity需要继承哪个类?
A.android. Activity
B.app.Activity
C.android.app. Activity
D.android.app. activity
A.android. Activity
B.app.Activity
C.android.app. Activity
D.android.app. activity
readmyThread=newThread(target);问:以下哪个类可以创建target对象,并能
编译正确()。
A.publicclassMyRunnableextendsRunnable{publicvoidrun(){}}
B.publicclassMyRunnableextendsObject{publicvoidrun(){}}
C.publicclassMyRunnableimplementsRunnable{publicvoidrun(){}}
D.publicclassMyRunnableimplementsRunnable{voidrun(){}}
下列哪个方法可用于创建一个可运行的类? ()
A.public class X implements Runable {public void run(){...,.,}}
B.public class X implements Thread {public void run(){......}}
C.public class X implements Thread {public int run(){……}}
D.public class X implements Runable {protected void run(){.....}}
A.PCTFREE和PCTUSED
B.CACHE
C.NOLOGGING
D.TABLESPACE
A.PCTFREE和PCTUSED
B.CACHEC,NOLOGGING
C.NOLOGGING
D.TABLESPACE