📄 中文java技术网scjp考试题310-025(第二套1)18-147.htm
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310-025
Leading the way in IT testing and certification tools, www.testking.com
Question No: 1
Given:
1. public class test (
2. public static void main (String args[]) {
3. int i = 0xFFFFFFF1;
4. int j = ~i;
5.
6. }
7. )
What is the decimal value of j at line 5?
A. 0
B. 1
C. 14
D. –15
E. An error at line 3 causes compilation to fail.
F. An error at line 4 causes compilation to fail.
Answer: C
Question No: 2
Given:
Integer i = new Integer (42);
Long 1 = new Long (42);
Double d = new Double (42.0);
Which two expressions evaluate to True? (Choose Two)
A. (i ==1)
B. (i == d)
C. (d == 1)
D. (i.equals (d))
E. ......' />
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SCJP考试题310-025(第二套<1>)18/147 </font>
<font size=1 color=gray>阅读次数2132</font> <p align='right'>出处 CN-JAVA原创：huiwu917 </p> </p>
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这都是考试原题,有心人可以收集收集,会让你收益匪浅!因为这一套较多所以我分<1><2><3><4>.....将他罗列出来!18/147意思是这里罗列147里的前18题!!以后的请继续关注!!<br />
310-025<br />
Leading the way in IT testing and certification tools, www.testking.com<br />
Question No: 1<br />
Given:<br />
1. public class test (<br />
2. public static void main (String args[]) {<br />
3. int i = 0xFFFFFFF1;<br />
4. int j = ~i;<br />
5.<br />
6. }<br />
7. )<br />
What is the decimal value of j at line 5?<br />
A. 0<br />
B. 1<br />
C. 14<br />
D. –15<br />
E. An error at line 3 causes compilation to fail.<br />
F. An error at line 4 causes compilation to fail.<br />
Answer: C<br />
Question No: 2<br />
Given:<br />
Integer i = new Integer (42);<br />
Long 1 = new Long (42);<br />
Double d = new Double (42.0);<br />
Which two expressions evaluate to True? (Choose Two)<br />
A. (i ==1)<br />
B. (i == d)<br />
C. (d == 1)<br />
D. (i.equals (d))<br />
E. (d.equals (i))<br />
F. (i.equals (42))<br />
Answer: D, E<br />
Question No: 3<br />
Exhibit :<br />
1. public class test (<br />
2. private static int j = 0;<br />
3.<br />
4. private static boolean methodB(int k) (<br />
5. j += k;<br />
6. return true;<br />
6. )<br />
7.<br />
8. public static void methodA(int i) {<br />
9. boolean b:<br />
10. b = i < 10 | methodB (4);<br />
11. b = i < 10 || methodB (8);<br />
12. )<br />
13.<br />
14. public static void main (String args[] } (<br />
15. methodA (0);<br />
16. system.out.printIn(j);<br />
17. )<br />
18. )<br />
What is the result?<br />
A. The program prints “0”<br />
B. The program prints “4”<br />
C. The program prints “8”<br />
D. The program prints “12”<br />
E. The code does not complete.<br />
Answer: B<br />
Question No: 4<br />
Given<br />
1. Public class test (<br />
2. Public static void main (String args[]) (<br />
3. System.out.printIn (6 ^ 3);<br />
4. )<br />
5. )<br />
What is the output?<br />
Answer: 5<br />
Question No: 5<br />
Given:<br />
1. public class Foo {<br />
2. public static void main (String [] args) {<br />
3. StringBuffer a = new StringBuffer (“A”);<br />
4. StringBuffer b = new StringBuffer (“B”);<br />
5. operate (a,b);<br />
6. system.out.printIn{a + “,” +b};<br />
7. )<br />
8. static void operate (StringBuffer x, StringBuffer y) {<br />
9. x.append {y};<br />
10. y = x;<br />
11. )<br />
12. }<br />
What is the result?<br />
A. The code compiles and prints “A,B”.<br />
B. The code compiles and prints “A,A”.<br />
C. The code compiles and prints “B,B”.<br />
D. The code compiles and prints “AB,B”.<br />
E. The code compiles and prints “AB,AB”.<br />
F. The code does not compile because “+” cannot be overloaded for StringBuffer.<br />
Answer: D<br />
Question No: 6<br />
Exhibit:<br />
1. Public class test (<br />
2. Public static void stringReplace (String text) (<br />
3. Text = text.replace (‘j’ , ‘i’);<br />
4. )<br />
5.<br />
6. public static void bufferReplace (StringBuffer text) (<br />
7. text = text.append (“C”)<br />
8. )<br />
9.<br />
10. public static void main (String args[]} (<br />
11. String textString = new String (“java”);<br />
12. StringBuffer text BufferString = new StringBuffer (“java”);<br />
13.<br />
14. stringReplace (textString);<br />
15. BufferReplace (textBuffer);<br />
16.<br />
17. System.out.printIn (textString + textBuffer);<br />
18. }<br />
19. )<br />
What is the output?<br />
Answer: JAVAJAVA<br />
Question No: 7<br />
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