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<td height="50" align="center" style="border-bottom:1px
dashed #666666"><strong class="f16">SCJP认证套题解析之十一</strong></td>
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<td height="40" align="center"> 作者：unknown 更新时间：
2005-03-22 </td>
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51、Which is not a method of the class InputStream? <br>
A. int read(byte[]) <br>
B. void flush() <br>
C. void close() <br>
D. int available() <br>
(b) <br>
题目：下面哪个不是InputStream类中的方法 <br>
<br>
这个题目没有什么好说的，要求熟悉java API中的一些基本类，题目中的InputStream是所有输入流的父类，所有要很熟悉，参看JDK的API文档。方法void flush()是缓冲输出流的基本方法，作用是强制将流缓冲区中的当前内容强制输出。 <br>
<br>
52、Which class is not subclass of FilterInputStream? <br>
A. DataInputStream <br>
<br>
B. BufferedInputStream <br>
<br>
C. PushbackInputStream <br>
<br>
D. FileInputStream <br>
<br>
(d) <br>
<br>
题目： <br>
哪个不是FilterInputStream的子类。 <br>
<br>
此题也是要求熟悉API基础类。Java基础API中的FilterInputStream 的已知子类有：BufferedInputStream, CheckedInputStream, CipherInputStream, DataInputStream, DigestInputStream, InflaterInputStream, LineNumberInputStream, ProgressMonitorInputStream, PushbackInputStream 。 <br>
<br>
53、Which classes can be used as the argument of the constructor of the class <br>
FileInputStream? <br>
A. InputStream <br>
<br>
B. File <br>
<br>
C. FileOutputStream <br>
<br>
D. String <br>
<br>
(bd) <br>
<br>
题目：哪些类可以作为FileInputStream类的构造方法的参数。 <br>
<br>
此题同样是要求熟悉基础API，FileInputStream类的构造方法有三个，可接受的参数分别是：File、FileDescriptor、String类的一个对象。 <br>
<br>
54、Which classes can be used as the argument of the constructor of the class FilterInputStream? <br>
A. FilterOutputStream <br>
<br>
B. File <br>
<br>
C. InputStream <br>
<br>
D. RandomAccessFile <br>
<br>
(c) <br>
<br>
题目：哪些类可以作为FilterInputStream类的构造方法的参数。 <br>
<br>
FilterInputStream的构造方法只有一个，其参数是一个InputStream对象。 <br>
<br>
55、Given the following code fragment: <br>
1) switch(m) <br>
<br>
2) { case 0: System.out.println("case 0"); <br>
<br>
3) case 1: System.out.println("case 1"); break; <br>
<br>
4) case 2: <br>
<br>
5) default: System.out.println("default"); <br>
<br>
6) } <br>
Which value of m would cause "default" to be the output? <br>
A. 0 <br>
<br>
B. 1 <br>
<br>
C. 2 <br>
<br>
D. 3 <br>
<br>
(cd) <br>
<br>
题目：给出下面的代码片断： <br>
… <br>
m为哪些值将导致"default"输出。 <br>
<br>
此题考察switch语句的用法，switch的判断的条件必须是一个int型值，也可以是byte、short、char型的值，case中需要注意的是一个case后面一般要接一个break语句才能结束判断，否则将继续执行其它case而不进行任何判断，如果没有任何值符合case列出的判断，则执行default的语句，default是可选的，可以没有，如果没有default而又没有任何值匹配case中列出的值则switch不执行任何语句。<br>
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