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OOP Java
Questions
Program
WAP to find area of circle.
1 year ago
OOP Java
Compile code:
Output:
0
Dipti KC
Jan 8, 2023
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27. WAP to check whether a number is odd or even using scanner.
28. WAP to find smallest among three numbers using scanner.
29. WAP to find largest among three numbers using scanner.
30. WAP to find smallest among two numbers using scanner.
31. WAP to find largest among two numbers using scanner.
32. WAP to find area of rectangle using scanner.
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41. WAP to check whether a number is odd or even.
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44. WAP to find smallest among two numbers.
45. WAP to find largest among two numbers.
46. WAP to find area of circle.
47. WAP to add,subtract,multiply and divide two numbers.
48. WAP to find area of rectangle.
49. WAP to find simple interest.
50. WAP to find product of two number.
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58. WAP to find largest among two numbers.
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61. WAP to find simple interest.
62. WAP to find product of two number.
63. WAP to find sum of two numbers.
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68. WAP to count the no. of times high and low priority threads loop run (implementing runnable interface)
69. WAP to create multiple threads (extending thread class)
70. WAP to create multiple threads (implementing runnable interface)
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79. Write a program to implement keyboard events.
80. Write a program to implement mouse events.
81. Write a program to implement thread, applets and graphics by implementing animation of ball moving.
82. Write a program to calculate bonus for different departments using method overriding.
83. Write a program to create student report using applet, read the input using text boxes and display the o/p using buttons.
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89. Write a program to display all prime numbers between two limits.
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91. What is meant by implicit objects and what are they ?
92. What are Expressions ?
93. What are Decalarations ?
94. What are Scriptlets ?
95. What are JSP actions ?
96. What are Directives ? What are the different types of Directives available in JSP ?
97. What are the advantages of JSP ?
98. What are the advantages of JSP ?
99. How are the JSP requests handled ?
100. What is a JSP Page ?
101. What is URL Encoding and URL Decoding ?
102. What’s the difference between sendRedirect and forward methods ?
103. What is HTTP Tunneling ?
104. Which protocol will be used by browser and servlet to communicate ?
105. What is a cookie ? What is the difference between session and cookie ?
106. What is the structure of the HTTP response ?
107. How do you find out what client machine is making a request to your servlet ?
108. What is Servlet Chaining ?
109. What is a Server Side Include (SSI) ?
110. What is meant by a Web Application ?
111. What is the difference between doGet() and doPost() ?
112. Explain the life cycle of a Servlet.
113. What is the difference between GenericServlet and HttpServlet ?
114. What is the difference between an Applet and a Servlet ?
115. Explain the architechure of a Servlet.
116. What is a Servlet ?
117. Explain Serialization and Deserialization.
118. Explain Marshalling and demarshalling.
119. What is the purpose of using RMISecurityManager in RMI ?
120. What is DGC ? And how does it work ?
121. What is the role of stub in RMI ?
122. What are the steps involved to make work a RMI program ?
123. What is the difference between using bind() and rebind() methods of Naming Class ?
124. What is meant by binding in RMI ?
125. What is the role of the java.rmi.Naming Class ?
126. What is the role of Remote Interface in RMI ?
127. What are the layers of RMI Architecture ?
128. What is the basic principle of RMI architecture ?
129. What is RMI ?
130. What does Connection pooling mean ?
131. What is the use of CallableStatement ? Name the method, which is used to prepare a CallableStatement.
132. What is the advantage of PreparedStatement over Statement ?
133. What is the purpose Class.forName method ?
134. Explain the role of Driver in JDBC
135. What is JDBC ?
136. What is the design pattern that Java uses for all Swing components ?
137. What advantage do Java’s layout managers provide over traditional window- ing systems ?
138. How can a GUI component handle its own events ?
139. What is the relationship between an event-listener interface and an event- adapter class ?
140. What is the relationship between clipping and repainting ?
141. What is the difference between a Window and a Frame ?
142. How are the elements of a GridBagLayout organized ?
143. How are the elements of a BorderLayout organized ?
144. What is the difference between a MenuItem and a CheckboxMenuItem ?
145. What is clipping ?
146. Name three Component subclasses that support painting.
147. Which Swing methods are thread-safe ?
148. What is the difference between a Scrollbar and a JScrollPane ?
149. What is a layout manager ?
150. What is the difference between a Choice and a List?
151. What is the applet security manager, and what does it provide ?
152. What is the applet class loader, and what does it provide ?
153. What is the difference between applets loaded over the internet and applets loaded via the file system ?
154. What are untrusted applets ?
155. What are the restrictions imposed on Java applets ?
156. What is the difference between an Applet and a Java Application ?
157. What happens when an applet is loaded ?
158. Explain the life cycle of an Applet.
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162. What is the importance of finally block in exception handling ?
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165. What are the two types of Exceptions in Java ? Which are the differences between them ?
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167. When does an Object becomes eligible for Garbage collection in Java?
168. What is the difference between Serial and Throughput Garbage collector ?
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173. What is the purpose of garbage collection in Java, and when is it used ?
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175. What’s the difference between Enumeration and Iterator interfaces ?
176. What are some of the best practices relating to the Java Collection framework ?
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179. What is Java Priority Queue ?
180. What is Comparable and Comparator interface ? List their differences.
181. What is difference between ArrayList and LinkedList ?
182. What is difference between Array and ArrayList ? When will you use Array over ArrayList ?
183. What differences exist between HashMap and Hashtable ?
184. What is the importance of hashCode() and equals() methods ?
185. How HashMap works in Java ?
186. What is difference between fail-fast and fail-safe ?
187. What differences exist between Iterator and ListIterator ?
188. What is an Iterator ?
189. Why Collection doesn’t extend Cloneable and Serializable interfaces ?
190. What are the basic interfaces of Java Collections Framework ?
191. How do you ensure that N threads can access N resources without deadlock ?
192. What’s a deadlock ?
193. How does thread synchronization occurs inside a monitor ? What levels of synchronization can you apply ?
194. What is the difference between a synchronized method and a synchronized block ?
195. Explain the available thread states in a high-level.
196. Explain different ways of creating a thread. Which one would you prefer and why ?
197. What is the difference between processes and threads ?
198. What are pass by reference and pass by value ?
199. What is the difference between an Interface and an Abstract class ?
200. Does Java support multiple inheritance ?
201. What is a Constructor, Constructor Overloading in Java and Copy-Constructor
202. What is Function Overriding and Overloading in Java ?
203. What are the Data Types supported by Java ? What is Autoboxing and Unbox- ing ?
204. Can you access non static variable in static context ?
205. What does the “static” keyword mean ? Can you override private or static method in Java ?
206. What is the Difference between JDK and JRE ?
207. What is JVM ? Why is Java called the Platform Independent Programming Lan- guage?
208. What is Object Oriented Programming (OOP)?
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