Pass reference value

Code:

1. Code:
3. 1.
4. 2. Import java. util. arraylist;
5. 3. Import java. util. iterator;
6. 4. Import java. util. List;
7. 5. // pass the reference value
8. 6. Public class person {
9. 7.
10. 8. Public void changeobject (student s ){
11. 9. S. setname ("careers111 ");
12. 10 .}
13. 11.
14. 12. Public void changstring (string Str ){
15. 13. Str = STR + "world ";
16. 14 .}
17. 15.
18. 16. Public void changearray (string [] array ){
19. 17./* string [] STR = {"ie", "Firefox", "theworld", "Chrome", "safari", "Opera "};
20. 18. array = STR;
21. 19 .*/
22. 20. array [0] = "change ";
23. 21 .}
24. 22.
25. 23. Public static void main (string [] ARGs ){
26. 24.
27. 25. // object
28. 26. Person P = new person ();
29. 27. Student s = new student ();
30. 28. S. setname ("careers000 ");
31. 29. P. changeobject (s );
32. 30. system. Out. println ("S. getname () =" + S. getname (); // S. getname () = careers111
33. 31.
34. 32. // string
35. 33. String STR = "hello ";
36. 34. P. changstring (STR );
37. 35. system. Out. println ("str =" + Str); // STR = Hello
38. 36.
39. 37. // Array
40. 38. string [] array = {"oracle", "DB2", "Informix", "MySQL", "hsql", "access", "sqlserver", "sybase "};
41. 39. P. changearray (array );
42. 40. system. Out. println ("array [0] =" + array [0]); //
43. 41.
44. 42. // list
45. 43. List <string> List = new arraylist <string> ();
46. 44. List. Add ("111 ");
47. 45. List. Add ("222 ");
48. 46. List. Add ("333 ");
49. 47. iterator <string> it = List. iterator ();
50. 48. While (it. hasnext ()){
51. 49. If (it. Next () = "222 "){
52. 50. It. Remove ();
53. 51 .}
54. 52 .}
55. 53. system. Out. println (list. Size (); // 2
56. 54 .}
57. 55 .}
58. 56. class student {
59. 57. Private string name;
60. 58. Public String getname (){
61. 59. Return name;
62. 60 .}
63. 61. Public void setname (string name ){
64. 62. This. Name = Name;
65. 63 .}
66. 64 .}