Sun_Java程序员认证考试题库 - 共83页

Java

Swing (GUI) Java

Java

1 JDK A Java B API C Java EE API D Java

2 JDK JRE JVM A JDK JRE JVM JRE B JRE JDK JDK JVM C JRE JDK JVM JRE D JDK JRE JRE JVM

3 java A javac B jdb

C javadoc D junit

4 JDK javadoc A Java B Java C Java D Java

5 Java A java lang

B javax servlet .http C j ava. io

D java sql

6 JDK Java A XML B c D HTML

7 JVM A JVM B JVM

C JVM Java Java D JVM Java Java

8 Java A Java Solaris B Java Windows

C Java Java D Java Java

9 Applet Java A - Applet Java

B Applet Java Web C Applet Java Web D Applet Java SE

10 Java HotSpot

A JavaHotSpot Java B Java HotSpot Java

C Java HotSpot D Java HotSpot

11 PATH

A. B. C.* D:|

12 CLASSPATH A B C D

13 JVM Java A > > B > > C > > D > >

14 Java A java 1 2 B javac 1 2 C java 1 2 D java 1+ 2

15 Java A Java .java

B Java C Java java D Java Java

lC 2D 3A 4A SACD 6D 7AC 8C 9B 10 AD 11 A 12 B 13 D 14 C 15 AB

1 Java A int B String C double D boolean

2 int A \u03A6 B 077

C OxABBC D 20

3 A userName B 2test C $change D _password

4 Java A B -- C *

* */ D /kk * */

5 Java A goto B sizeof C instanceof D volatile

6

Linel: int a_really_really_really_long_variable_name=5 ; Line2: int _hi=6

Line3: int big=Integer. getlnteger("7”); Line4 int $dollars=8; line5: int %opercent=9; A Line1 B Line3 C. Line4 D. Line5

7

1. class Top {

2 static int x=l

3. public Top (inty) { x*=3; } 4. }

5. class Middle extends Top { 6. public Middle() {x+=1; )

7. public static void main (String [] args) 8. Middle m = new Middle(); 9. System. out .println (x); IO. } II. } A.1 B. 2 C 3

D

8

1 class Passer f

2 static final int X=5

3.public static void main (String [] args) { 4 new Passer() go (x); 5.System. out .print (x); 6 )

7 void go (int x) { 8 System. out .print(x++); 9 } 10. }

{

A 55 B 56 C 65 D 66

9

1 class Wrench f

2.public static void main(String [] args) {

3.Wrench w=new Wrench(); Wrench w2=new Wrench(); 4 w2=go (w, w2) 5.System.out.print (w2==w); 6 }

7.static Wrench go (Wrench wrl, Wrench wr2) { 8.Wrench wr3=wrl; wrl=wr2; wr2=wr3; 9 return wr3; 10 } 11 }

A. false B true C.

D

10

5 class Wrench2 { 6 int size;

7.public static void main(String [] args) { 8.Wrench2 w=new Wrench2(); 9 w.size=II;

IO. Wrench2 w2=go(w, w.size); II. System. out .print (w2. size); 12 )

13. static Wrench2 go(Wrench2 wr. int s) { 14. S=12;

15 return wr; 16. } 17. }

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