Java³ÌÐòÉè¼ÆÏ°Ì⼯

Example ex=new Example(); ex.change(ex.str,ex.ch);

System.out.print(ex.str+\ Sytem.out.print(ex.ch); }

public void change(String str,char ch[]){ str=\ ch[0]='g'; } }

A¡¢ good and abc B¡¢ good and gbc

C¡¢test ok and abc D¡¢ test ok and gbc

35.ÔËÐÐÏÂÁгÌÐò, »á²úÉúʲô½á¹û£¨ a £©

public class X extends Thread implements Runable{ public void run(){

System.out.println(\ }

public static void main(String args[]) {

Thread t=new Thread(new X()); t.start(); }

}

A¡¢ µÚÒ»Ðлá²úÉú±àÒë´íÎó B¡¢ µÚÁùÐлá²úÉú±àÒë´íÎó C¡¢ µÚÁùÐлá²úÉúÔËÐдíÎó D¡¢ ³ÌÐò»áÔËÐкÍÆô¶¯

36.Òª´ÓÎļþ\file.dat\ÎļþÖжÁ³öµÚ10¸ö×Ö½Úµ½±äÁ¿CÖÐ,ÏÂÁÐÄĸö·½·¨ÊʺÏ? £¨ £©

A¡¢ FileInputStream in=new FileInputStream(\in.skip(9); int c=in.read(); B¡¢ FileInputStream in=new FileInputStream(\in.skip(10); int c=in.read();

C¡¢ FileInputStream in=new FileInputStream(\int c=in.read();

D¡¢ RandomAccessFile in=new RandomAccessFile(\

- 9 - µÚ Ò³

Java³ÌÐòÉè¼ÆÏ°Ì⼯

in.skip(9); int c=in.readByte();

37.ÈÝÆ÷±»ÖØÐÂÉèÖôóСºó£¬ÄÄÖÖ²¼¾Ö¹ÜÀíÆ÷µÄÈÝÆ÷ÖеÄ×é¼þ´óС²»ËæÈÝÆ÷´óСµÄ±ä»¯¶ø¸Ä±ä£¿£¨ £©

A¡¢ CardLayout

B¡¢ FlowLayout C¡¢ BorderLayout D¡¢ GridLayout 38.¸ø³öÏÂÃæ´úÂ룺 public class Person{

static int arr[] = new int[10]; public static void main(String a[]) {

System.out.println(arr[1]); } }

ÄǸöÓï¾äÊÇÕýÈ·µÄ£¿£¨ £©

A¡¢ ±àÒëʱ½«²úÉú´íÎó£»

B¡¢ ±àÒëʱÕýÈ·£¬ÔËÐÐʱ½«²úÉú´íÎó£» C ¡¢Êä³öÁ㣻 D¡¢ Êä³ö¿Õ¡£

39.Äĸö¹Ø¼ü×Ö¿ÉÒÔ¶Ô¶ÔÏó¼Ó»¥³âËø£¿£¨ £©

A¡¢ transient B synchronized C serialize

D static

40.ÏÂÁÐÄÄЩÓï¾ä¹ØÓÚÄÚ´æ»ØÊÕµÄ˵Ã÷ÊÇÕýÈ·µÄ? £¨ £©

A¡¢ ³ÌÐòÔ±±ØÐë´´½¨Ò»¸öÏß³ÌÀ´ÊÍ·ÅÄڴ棻 B¡¢ ÄÚ´æ»ØÊÕ³ÌÐò¸ºÔðÊÍ·ÅÎÞÓÃÄÚ´æ

C¡¢ÄÚ´æ»ØÊÕ³ÌÐòÔÊÐí³ÌÐòÔ±Ö±½ÓÊÍ·ÅÄÚ´æ D¡¢ÄÚ´æ»ØÊÕ³ÌÐò¿ÉÒÔÔÚÖ¸¶¨µÄʱ¼äÊÍ·ÅÄÚ´æ¶ÔÏó 41.ÏÂÁдúÂëÄļ¸Ðлá³ö´í: £¨ £© 1) public void modify() { 2} int I, j, k; 3) I = 100;

4) while ( I > 0 ) {

5} j = I * 2;

6) System.out.println (\ 7) k = k + 1;

- 10 - µÚ Ò³

Java³ÌÐòÉè¼ÆÏ°Ì⼯

8) I--; 9) }

10} }

A¡¢ line 4

B¡¢ line 6 C¡¢ line 7 D¡¢ line 8

42.MAX_LENGTHÊÇintÐÍpublic³ÉÔ±±äÁ¿, ±äÁ¿Öµ±£³ÖΪ³£Á¿100£¬Óüò¶ÌÓï¾ä¶¨ÒåÕâ¸ö±äÁ¿¡££¨ £©

A¡¢ public int MAX_LENGTH=100; B¡¢ final int MAX_LENGTH=100;

C¡¢ final public int MAX_LENGTH=100; D¡¢ public final int MAX_LENGTH=100. 43.¸ø³öÏÂÃæ´úÂ룺 1) class Parent { 2} private String name;

3} public Parent(){} 4} }

5) public class Child extends Parent { 6} private String department; 7} public Child() {}

8} public String getValue(){ return name; } 9} public static void main(String arg[]) { 10} Parent p = new Parent(); 11} } 12} }

ÄÇЩÐн«ÒýÆð´íÎó£¿ £¨ £© A¡¢ µÚ3ÐÐ

B¡¢ µÚ6ÐÐ

C¡¢ µÚ7ÐÐ D¡¢ µÚ8ÐÐ

44.ÀàTeacherºÍStudentÊÇÀàPersonµÄ×ÓÀࣻ Person p; Teacher t; Student s;

//p, t and s are all non-null.

if(t instanceof Person) { s = (Student)t; } ×îºóÒ»¾äÓï¾äµÄ½á¹ûÊÇ£º £¨ £©

- 11 - µÚ Ò³

Java³ÌÐòÉè¼ÆÏ°Ì⼯

A¡¢ ½«¹¹ÔìÒ»¸öStudent¶ÔÏó£» B¡¢ ±í´ïʽÊǺϷ¨µÄ£»

C¡¢ ±í´ïʽÊÇ´íÎóµÄ£»

D¡¢ ±àÒëʱÕýÈ·£¬µ«ÔËÐÐʱ´íÎó¡£ 45.¸ø³öÏÂÃæ´úÂë¶Î 1) public class Test { 2} int m, n;

3} public Test() {}

4} public Test(int a) { m=a; }

5} public static void main(String arg[]) { 6} Test t1,t2; 7} int j,k;

8} j=0; k=0;

9} t1=new Test();

10} t2=new Test(j,k); 11} }

12} }

ÄÄÐн«ÒýÆðÒ»¸ö±àÒëʱ´íÎ󣿣¨ £©

A¡¢ line 3 B¡¢ line 5

C¡¢ line 6 D¡¢ line 10 46.¶ÔÓÚÏÂÁдúÂ룺 1) class Person {

2} public void printValue(int i, int j) {//... } 3} public void printValue(int i){//... } 4} }

5) public class Teacher extends Person { 6} public void printValue() {//... } 7} public void printValue(int i) {//...} 8} public static void main(String args[]){ 9} Person t = new Teacher(); 10} t.printValue(10); 11} }

µÚ10ÐÐÓï¾ä½«µ÷ÓÃÄÄÐÐÓï¾ä£¿£¨ £©

A¡¢ line 2 B¡¢ line 3 C¡¢ line 6

- 12 - µÚ Ò³