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คอมพิวเตอร์เบื้องต้น - นักวิทยุสมัครเล่น - จังหวัด รหัสไปรษณีย์ - Visual Basic - JAVA - ศัพท์200 - ทั่วไป.ศิริรุ่ง
แบบทดสอบ จาวา ชุดเล็ก (Mini JAVA) ในชุด 30 ข้อ
ปรับปรุง : 2553-11-25 (ปรับการแสดงผล)
1. Which of the following are illegal lines? [j0081]
package class a{ }
final class a{ }
public class a{ }
strictfp class a{ }
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2. Which of the following are illegal lines? [j0088]
void method () { }
void excite (int a) { }
int outpro (true a) { }
void byebye (int a) { }
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3. Which of the following are data type for switch? [j0095]
byte
float
String
double
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4. Which of the following are result of 3 | 5? [j0102]
1
3
6
7
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5. Which of the following are illegal lines about String class? [j0109]
x.charAt(5)
x.toLowerCase()
x.length
x.replace("a","A")
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6. Which of the following are legal lines about StringBuffer class? [j0116]
x.insert(4,"a")
x.toUpperCase()
x.length()
x.replace("a","A","")
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7. Which of the following are default method of runnable? [j0123]
begin()
open()
run()
start()
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8. Which of the following are illegal lines? [j0004]
int x = 1.0;
byte b = -127;
float a = 5;
boolean x = true;
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9. Which of the following are illegal lines? [j0011]
char a = 'a' + 'a';
int a = (long)'z'
int a = 10/3;
byte a = 10/3;
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10. Which of the following are illegal identifiers? [j0018]
yonok
joy
$aa
2005year
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11. How much is LONG for primitive type? [j0025]
8 bit
16 bit
32 bit
64 bit
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12. What will be printed out for the following code?
System.out.println(010); [j0032]
8
10
Compilation fails
An exception is thrown at runtime
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13. What will be printed out for the following code?
System.out.println(0x022); [j0039]
22
18
34
Compilation fails
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14. Which of the following are Java keywords? [j0046]
exception
Import
package
export
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15. What is access modifier? [j0053]
exception
import
javac
private
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16. What is collection class? [j0060]
LinkList
TreeList
HashMap
OrderedList
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17. What is collection class? [j0067]
TreeList
HashSet
ThreeSet
MapSet
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18. Which of the following are illegal lines? [j0074]
int [5] a;
int [] aa [];
int [][] a;
int a[];
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19. Which of the following are illegal lines? [j0081]
package class a{ }
final class a{ }
public class a{ }
strictfp class a{ }
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20. Which of the following are illegal lines? [j0088]
void method () { }
void excite (int a) { }
int outpro (true a) { }
void byebye (int a) { }
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21. Which of the following are data type for switch? [j0095]
byte
float
String
double
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22. Which of the following are result of 3 | 5? [j0102]
1
3
6
7
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23. Which of the following are illegal lines about String class? [j0109]
x.charAt(5)
x.toLowerCase()
x.length
x.replace("a","A")
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24. Which of the following are legal lines about StringBuffer class? [j0116]
x.insert(4,"a")
x.toUpperCase()
x.length()
x.replace("a","A","")
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25. Which of the following are default method of runnable? [j0123]
begin()
open()
run()
start()
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26. Which of the following are illegal lines? [j0004]
int x = 1.0;
byte b = -127;
float a = 5;
boolean x = true;
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27. Which of the following are illegal lines? [j0011]
char a = 'a' + 'a';
int a = (long)'z'
int a = 10/3;
byte a = 10/3;
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28. Which of the following are illegal identifiers? [j0018]
yonok
joy
$aa
2005year
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29. How much is LONG for primitive type? [j0025]
8 bit
16 bit
32 bit
64 bit
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30. What will be printed out for the following code?
System.out.println(010); [j0032]
8
10
Compilation fails
An exception is thrown at runtime
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