QUESTION NO: 1
Given:
11. int i =1,j =10;
12. do {
13. if(i++> --j) {
14. continue;
15. }
16. } while (i <5);
17. System.out.println(“i = “ +i+ “and j = “+j);
What is the result?

Question No: 2
Given:
1. class Bigger {
2. public static void main(String[] args) {
3. // insert code here
4. }
5. }
6. class Better {
7. enum Faster {Higher, Longer};
8. }
Which, inserted independently at line 3, will compile? (Choose all that apply.)
A. Faster f = Faster.Higher;
B. Faster f = Better.Faster.Higher;
C. Better.Faster f = Better.Faster.Higher;
D. Bigger.Faster f = Bigger.Faster.Higher;
E. Better.Faster f2; f2 = Better.Faster.Longer;
F. Better b; b.Faster = f3; f3 = Better.Faster.Longer;

ليت المشرفين أو أي شخص من الإدارة أو أي عضو يساعدوننا في ايجاد فكرة لتنظيم هذه الأسئلة بحيث يسهل تصفحها من الأعضاء والزائرين
وبنفس الوقت تبقى ضمن مكان واحد يسهل الرجوع اليه
أما المواضيع الجديدة ستبعثر الأسئلة ..

Given the following variables

char c = 'c';
int i = 10;
double d = 10;
long l = 1;
String s = "Hello";

Which of the following will compile without error?

1  c=c+i;  
2  s+=i;  
3  i+=s;  
4  c+=s;

What will happen when you attempt to compile and run the following code?
import java.util.*;
public class BinFind{
    public static void main(String argv[]){
        new BinFind();
   }
    BinFind(){
        ArrayList<String> al = new ArrayList<String>();
        al.add("USA");
        al.add("Algeria");
        al.add("China");
        Collections.sort(al);
    int iOffSet= Collections.binarySearch(al,"China");
        System.out.println(iOffSet);
    }
}

11. int i =1,j =10;
12. do {
13. if(i++> --j) {
14. continue;
15. }
16. } while (i <5);
17. System.out.println(“i = “ +i+ “and j = “+j);
What is the result?

if(i++> --j)

Given the following code, which of the options added individually will allow the code to compile?
public class ChinaHearts{
    public static void main(String argv[]){
    System.out.println("I'll miss you" + h);
   }
}


  1 char h = 1; //on the line before the System.out.println statement.  
  2 static char h = 1; //On the line before the System.out.println statement  
  3 char h = 1;//On the line before the main method  
  4 static char h = 1;//On the line before the main method

What will happen when you attempt to compile and run the following code?
class Computer{
    protected static String sCpuType;
    Computer(){
    sCpuType="i386";
    }

}

class Laptop extends Computer{
    public String sCpuType="AMD Duron";
    public static void main(String argv[]){
    new Laptop();

    }
    Laptop(){
    
    System.out.println(Computer.sCpuType);
    System.out.println(sCpuType);
    }
}


  1 Compile time error caused by call Computer.sCpuType, no class reference Computer exists
  2 Compile time error, sCpuType is protected and thus not visible within class Laptop
  3 Compilation but runtime exception, sCpuType will not be visible until the class Computer is constructed
  4 Compilation, and output of i386 followed by AMD Duron at runtime

What will happen if you attempt to compile and run the following code?

class Base{}
class CatMat{
    int i = 99;
    int j= 100;
    public static void main(String argv[]){
    new CatMat(new Base());

    }
    public void alex( final int i){
    System.out.println(i+j);
    
    }
    CatMat( Object o){
    alex(1);
    }
}

1   Compile time error, code within main method is faulty.  
2  Compile time error, Catmat is expecting Object but is sent Base  
3   Compile time error Catmat(Object o) has no return type  
4   Compile time error the a final variable cannot be used with the + operator and a non final variable.  
5   Compilation and output of 100  
6   Compilation and output of 101

Given:
1. class Example {
2. public static void main(String[] args) {
3. Short s = 15;
4. Boolean b;
5. // insert code here
6. }
7. }
Which, inserted independently at line 5, will compile? (Choose all that apply.)
A. b = (Number instanceof s);
B. b = (s instanceof Short);
C. b = s.instanceof(Short);
D. b = (s instanceof Number);
E. b = s.instanceof(Object);
F. b = (s instanceof String);

What will happen when you attempt to compile and run the following code?
abstract class Base{
    int iSize;
    public int getAge(){
    return iSize;
    }

}
class Jewel extends Base{
    private int iAge=99;
}

public class KDierden extends Jewel{

    public static void main(String argv[]){
    new KDierden();
    }
    private KDierden(){
    System.out.print(iAge);
    }

}


  1 Compile time error because an abstract class cannot have non abstract methods.
  2 Compile time error, a constructor may not be marked as private
  3 Compilation and output of 99
  4 Compile time error, iAge is not visible within class KDierde

What will happen when you attempt to run and compile the following code?

public class SandCar extends Thread{
    public static void main(String argv[]){
        SandCar s = new SandCar();    
    }
        SandCar(){
            Lil.Burg lb = new Lil().new Burg();
            lb.start();
        }

    public void Sierra(){}

}

class Lil  {
    class Burg extends Thread {
        public void run(){
        iona();        
    }
        
        public void iona(){
                try{
                    wait();
                }catch(InterruptedException ioe){}
                notifyAll();
                System.out.println("Chris");
            }

        }        
    
}

abstract interface PCar{
        public void Sierra();
}



1   Compile time error, malformed syntax for creation of instance lb in SandCar constructor  
2   Compilation but no output at runtime  
3   Compilation and output of "Chris"  
4   Compilation but runtime exception

1. What is the difference between an Abstract class and Interface ?
2. What is user defined exception ?
3. What do you know about the garbage collector ?
4. What is the difference between C++ & Java ?
5. Explain RMI Architecture?
6. How do you communicate in between Applets & Servlets ?
7. What is the use of Servlets ?
8. What is JDBC? How do you connect to the Database ?
9. In an HTML form I have a Button which makes us to open another page in 15 seconds. How will do you that ?
10. What is the difference between Process and Threads ?
11. What is the difference between RMI & Corba ?
12. What are the services in RMI ?
13. How will you initialize an Applet ?
14. What is the order of method invocation in an Applet ?
15. When is update method called ?
16. How will you pass values from HTML page to the Servlet ?
17. Have you ever used HashTable and Dictionary ?
18. How will you communicate between two Applets ?
19. What are statements in JAVA ?
20. What is JAR file ?
21. What is JNI ?
22. What is the base class for all swing components ?
23. What is JFC ?
24. What is Difference between AWT and Swing ?
25. Considering notepad/IE or any other thing as process, What will happen if you start notepad or IE 3 times? Where 3 processes are started or 3 threads are started ?
26. How does thread synchronization occurs inside a monitor ?
27. How will you call an Applet using a Java Script function ?
28. Is there any tag in HTML to upload and download files ?
29. Why do you Canvas ?
30. How can you push data from an Applet to Servlet ?
31. What are 4 drivers available in JDBC ?
32. How you can know about drivers and database information ?
33. If you are truncated using JDBC, How can you know ..that how much data is truncated ?
34. And What situation , each of the 4 drivers used ?
35. How will you perform transaction using JDBC ?
36. In RMI, server object first loaded into the memory and then the stub reference is sent to the client ? or whether a stub reference is directly sent to the client ?
37. Suppose server object is not loaded into the memory, and the client request for it , what will happen?
38. What is serialization ?
39. Can you load the server object dynamically? If so, what are the major 3 steps involved in it ?
40. What is difference RMI registry and OSAgent ?
41. To a server method, the client wants to send a value 20, with this value exceeds to 20,. a message should be sent to the client ? What will you do for achieving for this ?
42. What are the benefits of Swing over AWT ?
43. Where the CardLayout is used ?
44. What is the Layout for ToolBar ?
45. What is the difference between Grid and GridbagLayout ?
46. How will you add panel to a Frame ?
47. What is the corresponding Layout for Card in Swing ?
48. What is light weight component ?
49. Can you run the product development on all operating systems ?
50. What is the webserver used for running the Servlets ?
51. What is Servlet API used for connecting database ?
52. What is bean ? Where it can be used ?
53. What is difference in between Java Class and Bean ?
54. Can we send object using Sockets ?
55. What is the RMI and Socket ?
56. How to communicate 2 threads each other ?
57. What are the files generated after using IDL to Java Compilet ?
58. What is the protocol used by server and client ?
59. Can I modify an object in CORBA ?
60. What is the functionality stubs and skeletons ?
61. What is the mapping mechanism used by Java to identify IDL language ?
62. Diff between Application and Applet ?
63. What is serializable Interface ?
64. What is the difference between CGI and Servlet ?
65. What is the use of Interface ?
66. Why Java is not fully objective oriented ?
67. Why does not support multiple Inheritance ?
68. What it the root class for all Java classes ?
69. What is polymorphism ?
70. Suppose If we have variable ' I ' in run method, If I can create one or more thread each thread will occupy a separate copy or same variable will be shared ?
71. In servlets, we are having a web page that is invoking servlets username and password ? which is checked in the database ? Suppose the second page also If we want to verify the same information whether it will connect to the database or it will be used previous information?
72. What are virtual functions ?
73. Write down how will you create a binary Tree ?
74. What are the traverses in Binary Tree ?
75. Write a program for recursive Traverse ?
76. What are session variable in Servlets ?
77. What is client server computing ?
78. What is Constructor and Virtual function? Can we call Virtual function in a constructor ?
79. Why we use OOPS concepts? What is its advantage ?
80. What is the middleware ? What is the functionality of Webserver ?
81. Why Java is not 100 % pure OOPS ? ( EcomServer )
82. When we will use an Interface and Abstract class ?
83. What is an RMI?
84. How will you pass parameters in RMI ? Why u serialize?
85. What is the exact difference in between Unicast and Multicast object ? Where we will use ?
86. What is the main functionality of the Remote Reference Layer ?
87. How do you download stubs from a Remote place ?
88. What is the difference in between C++ and Java ? can u explain in detail ?
89. I want to store more than 10 objects in a remote server ? Which methodology will follow ?
90. What is the main functionality of the Prepared Statement ?
91. What is meant by static query and dynamic query ?
92. What are the Normalization Rules ? Define the Normalization ?
93. What is meant by Servlet? What are the parameters of the service method ?
94. What is meant by Session ? Tell me something about HTTPSession Class ?
95. How do you invoke a Servlet? What is the difference in between doPost and doGet methods ?
96. What is the difference in between the HTTPServlet and Generic Servlet ? Explain their methods ? Tell me their parameter names also ?
97. Have you used threads in Servlet ?
98. Write a program on RMI and JDBC using StoredProcedure ?
99. How do you sing an Applet ?
100. In a Container there are 5 components. I want to display the all the components names, how will you do that one ?
101. Why there are some null interface in java ? What does it mean ? Give me some null interfaces in JAVA ?
102. Tell me the latest versions in JAVA related areas ?
103. What is meant by class loader ? How many types are there? When will we use them ?
104. How do you load an Image in a Servlet ?
105. What is meant by flickering ?
106. What is meant by distributed Application ? Why we are using that in our applications ?
107. What is the functionality of the stub ?
108. Have you used any version control ?
109. What is the latest version of JDBC ? What are the new features are added in that ?
110. Explain 2 tier and 3 -tier Architecture ?
111. What is the role of the webserver ?
112. How have you done validation of the fields in your project ?
113. What is the main difficulties that you are faced in your project ?
114. What is meant by cookies ? Explain ?

static void printStuff(int level) {
            if (level == 0) {
               System.out.print("^");
            }
            else {
               System.out.print("(");
               printStuff(level - 2);
               System.out.print("/");
               printStuff(level - 2);
               System.out.print(")");
            }
        }

int Func(int x) {    
if (x >20)
        return x-10;
else
        return Func( Func( x + 11) );
}