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单选题
Which constructs a DataOutputStream？（）
A
New dataInputStream（“in.txt”）；
B
New dataInputStream（new file（“in.txt”））；
C
New dataInputStream（new writer（“in.txt”））；
D
New dataInputStream（new FileWriter（“in.txt”））；
E
New dataInputStream（new InputStream（“in.txt”））；
F
New dataInputStream（new FileInputStream（“in.txt”））；
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Which constructs a DataOutputStream？（） A、 New dataInputStream（“in.txt”）；B、 New dataInputStream（new file（“in.txt”））；C、 New dataInputStream（new writer（“in.txt”））；D、 New dataInputStream（new FileWriter（“in.txt”））；E、 New dataInputStream（new InputStream（“in.txt”））；F、 New dataInputStream（new FileInputStream（“in.txt”））；
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单选题Which constructs a DataOutputStream？（）A
New dataOutputStream（“out.txt”）；B
New dataOutputStream（new file（“out.txt”））；C
New dataOutputStream（new writer（“out.txt”））；D
New dataOutputStream（new FileWriter（“out.txt”））；E
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考题
单选题在下列程序的空白处，应填入的正确选项是（ ）。import java.io.*;
public class writeInt{
public static void main(String[] args){
int[] myArray={10,20,30,40};
try{
DataOutputStream dos=new DataOutputStream(new FileOutputStream("ints.dat"));
for(int i=0;i
dos.writeInt(myArray[i]);
dos.close();
System.out.println("Have written binary file ints.dat");
}
}
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System.out.println("IOException");
}
}
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start（）B
close（）C
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write（）
考题
单选题The system analysts have requested heavy use of object features. The database design makes use of PL/SQL8 object types, methods, and LOB types. How do you work with these features on the client?（）A
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Write server-side subprograms, and call the subprograms from the form application. C
Store the PL/SQL8 constructs in a PL/SQL library, and attack the library to each form muddle in your application.
考题
单选题public class enclosingone （ public class insideone{} ） public class inertest（ public static void main （stringargs）（ enclosingone eo= new enclosingone （）； //insert code here ） ） Which statement at line 7 constructs an instance of the inner class？（）A
InsideOnew ei= eo.new InsideOn（）；B
Eo.InsideOne ei = eo.new InsideOne（）；C
InsideOne ei = EnclosingOne.new InsideOne（）；D
EnclosingOne.InsideOne ei = eo.new InsideOne（）；
考题
单选题Which constructs a BufferedIputStream？（）A
New BufferedInputStream（“in.txt”）；B
New BufferedInputStream（new File（“in.txt”））；C
New BufferedInputStream（Writer（“in.txt”））；D
New BufferedInputStream（new Writer（“in.txt”））；E
New BufferedInputStream（new InputStream（“in.txt”））；F
New BufferedInputStream（new FileInputStream（“in.txt”））；
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单选题1. public class enclosingone （ 2. public class insideone{} 3. ） 4. public class inertest（ 5. public static void main （string[]args）（ 6. enclosingone eo= new enclosingone （）； 7. //insert code here 8. ） 9. ） Which statement at line 7 constructs an instance of the inner class？（）A
InsideOnew ei= eo.new InsideOn（）；B
Eo.InsideOne ei = eo.new InsideOne（）；C
InsideOne ei = EnclosingOne.new InsideOne（）；D
EnclosingOne.InsideOne ei = eo.new InsideOne（）；
考题
单选题在J2EE中，在提供名为sock的套接字实例的前提下，为了后去通过套接字进行通信的输出流，你可以编写（）A
sock.accept（）B
sock.getDataOutputStreamC
sock.getOutputStreamD
new DataOutputStream（sock）
考题
单选题What writes the text “ ” to the end of the file “file.txt”？（）A
OutputStream out= new FileOutputStream （“file.txt”）； Out.writeBytes （“ /n”）；B
OutputStream os= new FileOutputStream （“file.txt”， true）； DataOutputStream out = new DataOutputStream（os）； out.writeBytes （“ /n”）；C
OutputStream os= new FileOutputStream （“file.txt”）； DataOutputStream out = new DataOutputStream（os）； out.writeBytes （“ /n”）；D
OutputStream os= new OutputStream （“file.txt”， true）； DataOutputStream out = new DataOutputStream（os）； out.writeBytes （“ /n”）；
考题
单选题Java类库中，将信息写入内存的类是（ ）。A
java.io.FileOutputStreamB
java.io.ByteArrayOutputStreamC
java.io.BufferedOutputStreamD
java.io.DataOutputStream
考题
单选题如果我们想实现“先把要写入文件的数据先缓存到内存中，再把缓存中的数据写入文件中”的功能时，则需要使用下列哪个类？（）A
FileReaderB
OutputStreamC
FilterOutputStreamD
DataOutputStream
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