（）指的是伴随大量活动遗留的数据。
本题程序中实现了一个“生产者一消费者问题”。生产者产生一个随机数存入DataPool类中，消费者从中取出数据。DataPool类一次只能存放一个数据。请更正题中带下划线的部分。注意：不改变程序的结构，不得增行或删行。class DataPool{private int data;private boolean isFull;public DataPool(){isFull=false;}public synchronized void putData(int d){if(isFull= =true){try{this.notify();}catch(InterruptedException e){}}data=d;isFull=true;System.out.println("生产了一个数据:"+data);this.notify();}public synchronized int getData(){if(isFull= =false){try{this.wait();}catch(InterruptedException e){}}isFull=false;System.out.println("消费了一个数据"+data);this.wait();return this.data;}boolean getIsFull(){return isFull;}}class Producer extends Thread{DataPool pool;public Producer(DataPool pool){this.pool=pool;}public void run(){for(int i=0; i＜10; i++){int data=(int) (Math.random()*1000);try{//用于生产数据sleep(data);}catch(InterruptedException e){}pool.putData(data);}}}class Consumer implements Runnable{DataPool pool;public Consumer(DataPool pool){this.pool=pool;}public void run(){for(int i=0; i＜10; i++){int data=pool.getData();try{//用于处理数据sleep((int) (Math.random()*1000));}catch(InterruptedException e){}}}}public class advance}public static void main(String[] args){Data Pool pool=new Data Pool();Producer pro=new Producer(pool);Runnable con=new Consumer(pool);Thread conTh=new Thread(con);&n
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阅读下面一个支持多线程并发操作的堆栈类代码 public class MyStack { private int idx=0； private int[] data=new int[8]; public ______ Void push(int i) { data[idx]=i； idx++； } … } 在下画线处应填入的是A．synchronizedB．waitC．blockedD．interrupt
删除数据库的命令是( )。A．CLOSE DATAB．SET DATAC．OPEN DATAD．DELETE DATA
若有以下程序:includeusing namespace std;class data{public: int x; data(int x){若有以下程序： #include＜iostream＞ using namespace std; class data { public: int x; data(int x) { data::x=x; } class A private: data dl; public: A(int x): dl(x){ } void dispaO cout＜＜dl.x＜＜","; } }; class B: public A { private: data d2; public: B(int x):A(x-1),d2(x){ } void dispb() { cout＜＜d2.x＜＜endl; } }; class C: public B { public: C(int x):B(x-1){ } void disp0 { dispa(); dispb(); } }; int main() { C obj(5); obj.disp(); return 0; } 程序执行后的输出结果是( )。A．5,5B．4,5C．3,4D．4,3
若有以下程序:include using namespace std;class data{public: int x; data (int x)若有以下程序： #include ＜iostream＞ using namespace std; class data { public: int x; data (int x) { data: :x=x; } }; class A { private: data d1; public: A(int x) : d1 (x) { } void dispa() { cout＜＜d1, x＜＜", "; } }; class B: public A { private: data d2; public: B(int x) : A(x-1),d2(x) {} void dispb() { cout＜＜d2.x＜＜end1; } }; class C : public B { public: C(int x) : B(x-1){} void disp () { dispa ( ); dispb (); } }; int main ( ) { C obj (5); obj.disp(); return 0; } 程序执行后的输出结果是( )。A．5,5B．4,5C．3,4D．4,3
In which file created by a mksysb would an administrator find filesystem and logical volume information?()A./fs.dataB./image.dataC./bosinst.dataD./install.data
Asystemadministratorhasfilesystemsthatshouldnotbemountedduringsystemstartup.Howcanthesystemadministratorpreventthe／datafilesystemfrombeingmountedduringsubsequentboots?()A.mount-no/dataB.chfs-Ano/dataC.mount-tnfs/dataD.chfs-atype=nfs/data
