JAVA认证历年真题：310-025精选题（41）

会计考友 · 发表于 2012-8-4 12:33:16

310-025精选题（41）的具体内容如下：
182. What type of object is the parameter for all methods of the ActionListener interface? Answer:
ActionEvent
183. Which of the following statements about event handling in JDK 1.1 and later are true? Select all.
A. A class can implement multiple listener interfaces
B. If a class implements a listener interface, it only has to overload the methods it uses
C. All of the MouseMotionAdapter class methods have a void return type
AC.
184. Which of the following describe the sequence of method calls that result in a component being redrawn?
A. invoke paint() directly
B. invoke update which calls paint()
C. invoke repaint() which invokes update(), which in turn invokes paint()
D. invoke repaint() which invokes paint() directly
C.
185. Choose all valid forms of the argument list for the FileOutputStream constructor shown below:
A. FileOutputStream(FileDescriptor fd)
B. FileOutputStream(String n, boolean b)
C. FileOutputStream(boolean a)
D. FileOutputStream()
E. FileOutputStream(File f)
ABE.
186. A "mode" argument such as "r" or "rw" is required in the constructor for the class(es):
A. DataInputStream
B. InputStream
C. RandomAccessFile
D. File
E. None of the above
C.
187. A directory can be created using a method from the class(es):
A.File
B.DataOutput
C.Directory
D.FileDescriptor
E.FileOutputStream
A.
188. If raf is a RandomAccessFile, what is the result of compiling and executing the following code?
raf.seek(raf.length());
A. The code will not compile.
B. An IOException will be thrown.
C. The file pointer will be positioned immediately before the last character of the file.
D. The file pointer will be positioned immediately after the last character of the file.
D.

会计考友 · 发表于 2012-8-4 12:33:17

189. Consider the following code: What will be printed?
public class ExceptionTest{
public static void main(String [] args){
ExceptionTest e = new ExceptionTest();
e.trythis();
}
public void trythis(){
try{
System.out.println("1");
problem();
}
catch (RuntimeException x){
System.out.println("2");
return;
}
catch(Exception x){
System.out.println("3");
return;
}
finally{
System.out.println("4");
}
System.out.println("5");
}
public void problem()throws Exception{
throw new Exception();
}
}
A.1
B.2
C.3
D.4
E.5
ACD.

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[考试试题] JAVA认证历年真题：310-025精选题（41）

JAVA认证历年真题：310-025精选题（41）

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