2011年JAVA认证模拟题(39)
Q115 How many bytes does the following program write to temp.txt? import java.io.*;public class TestIOApp {
public static void main(String args[])
throws IOException {
FileOutputStream outStream = new
FileOutputStream(“test.txt”);
String s = “test”;
for (int i=0; i
outStream.write(s.charAt(i));
outStream.close();
}
}
A 2 bytes
B 4 bytes
C 8 bytes
D 16 bytes
Q116 What is the output of the following program?
import java.util.*;
class Question {
public static void main (String args[])
{
TreeMap map = new TreeMap();
map.put(“one”, “1”);
map.put(“two”, “2”);
map.put(“three”, “3”);
displayMap(map);
}
static void displayMap(TreeMap map) {
Collection c = map.entrySet();
Iterator i = c.iterator();
while(i.hasNext()) {
Object o = i.next();
System.out.print(o.toString());
}
}
}
A onetwothree
B 123
C one=1three=3two=2
D onethreetwo
2011年JAVA认证模拟题(39)
</p> Q117 Which lines of output are displayed by the following program?class Question {
public static void main(String [] args)
{
for(int i=0; i
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