Preeti Jain

C

1. C programs to display Pattern according to number of rows (3).
2. C programs to display Pattern according to number of rows (2).
3. C programs to display Pattern according to number of rows.

Java

1. Disadvantages/ Limitations of Object Arrays in Java.
2. Compare Array and Collection in Java.
3. Compare final, finally and finalize() in java.
4. Explain JDK and JRE.
5. Java - Difference between next() and nextLine() methods.
6. Java - Difference between throw and throws.
7. Java - Difference between float and double.
8. Compare array and ArrayList in Java.
9. Compare ArrayList and LinkedList in Java.
10. What are the differences between abstract class and interface?
11. What are the differences between abstraction and encapsulation?
12. Marker Interface in Java.
13. Why java is not pure object oriented programming language?
14. Why java is platform independent?
15. What are the differences between Heap and Stack Memory in Java?
16. Covariant return type in java.
17. Java program to print upper diamond pattern of numbers and dollars.
18. Java program to print upper diamond pattern of numbers.
19. How to access inner class in Java?
20. Can we access private variable outside of the class in Java?
21. Java program to demonstrate example of method overloading.
22. Java program to remove duplicate elements from an array.
23. Java program to concatenate two strings without using library function.
24. Java program to extract words from a given sentence.
25. Java program to check whether a given number is palindrome or not.
26. Java program to check whether a given number is prime or composite (non-prime).
27. Java program to convert Decimal to Octal.
28. Java program to convert Decimal to Binary.
29. Java program to find addition of N integer numbers.
30. Java program to addition of one dimensional and two dimensional arrays.
31. Java program to add digits of a number.
32. How to accept input from keyboard in java?
33. Java program to find addition and subtraction of two matrices.
34. How to get and set name of a thread in Java?
35. What is Multi Threading in Java?
36. super keyword and super() method in Java.
37. this keyword and this() method in Java.
38. What is static import in java?
39. Why java does not support multiple inheritances?
40. Thread pool in java, how to create it?
41. What is Deadlock, how to analyze and avoid it in java?
42. Why string is immutable or final in java?
43. Explain java ArrayList and its methods.
44. Explain OutOfMemory Error in java.
45. Convert String to byte array and vice versa in java.
46. Thread Scheduler and Time Slicing in Java.
47. How can we achieve Thread Safety in java?
48. Convert string lowercase to uppercase and vice versa without using library function in java.
49. How to create daemon thread in java?
50. Thread properties in java.
51. What will happen if we don't override thread class run() method in java?
52. Differences between User Thread and Daemon Thread in Java.
53. Explain Inner class in java.
54. Difference between Process and Thread in java.
55. Explain life cycle of a thread in java.
56. What are the differences between path and classpath in java?
57. Inheritance and its implementation in Java
58. Types of Inheritance in Java with Examples
59. Using final keyword with inheritance in Java
60. Java Constructors with Examples
61. Java LinkedList addFirst() method with Example
62. Java LinkedList addLast() method with Example
63. Java LinkedList getFirst() method with Example
64. Java LinkedList getLast() method with Example
65. Java LinkedList boolean add(Object o) method with Example
66. Java LinkedList boolean remove(Object o) method with Example
67. Java LinkedList boolean addAll(Collection c) method with Example
68. Java LinkedList boolean addAll(int index, Collection c) method with Example
69. Java LinkedList void add(int index, Object o) method with Example
70. Java LinkedList void clear() method with Example
71. Java LinkedList Object clone() method with Example
72. Java LinkedList boolean contains(Object o) method with Example
73. Java LinkedList public boolean offerFirst(Object o) method with Example
74. Java LinkedList public boolean offerLast(Object o) method with Example
75. Java LinkedList public boolean offer(Object o) method with Example
76. Java LinkedList public int indexOf(Object o) method with Example
77. Java LinkedList public int lastIndexOf(Object o) method with Example
78. Java LinkedList public Object peekFirst() method with Example
79. Java LinkedList public Object peekLast() method with Example
80. Java LinkedList public Object peek() method with Example
81. Java LinkedList public Object pollFirst() method with Example
82. Java LinkedList public Object pollLast() method with Example
83. Java LinkedList public Object poll() method with Example
84. Java LinkedList int size() method with Example
85. Java LinkedList Object pop() method with Example
86. Java LinkedList Object set(int index , Object o) method with Example
87. Java LinkedList void push(Object o) method with Example
88. Java LinkedList Object[] toArray() method with Example
89. Java Object Class boolean equals(Object o) method with Example
90. Java Object Class int hashCode() method with Example
91. Java LinkedList boolean removeFirstOccurrence(Object o) method with Example
92. Java LinkedList boolean removeLastOccurrence(Object o) method with Example
93. Java LinkedList Object element() method with Example
94. Java LinkedList Object get(int index) method with Example
95. Java Object Class protected void finalize() throws Throwable method with Example
96. Java Object Class String toString() method with Example
97. Java Object Class final void wait() method with Example
98. Java Object Class final void wait(long ms) method with Example
99. Java Object Class final void wait(long ms , int ns) method with Example
100. Java Object Class final Class getClass() method with Example
101. Java StringBuffer append(String s) method with Example
102. Java StringBuffer int capacity() method with Example
103. Java StringBuffer char charAt(int index) method with Example
104. Java StringBuffer int codePointAt(int index) method with Example
105. Java StringBuffer int codePointBefore(int index) method with Example
106. Java StringBuffer int codePointCount(int index1 , int index 2) method with Example
107. Java StringBuffer insert(int offset , String s) method with Example
108. Java StringBuffer int length() method with Example
109. Java StringBuffer reverse() method with Example
110. Java StringBuffer delete(int spos , int epos) method with Example
111. Java StringBuffer deleteCharAt(int index) method with Example
112. Java StringBuffer void ensureCapacity(int mincap) method with Example
113. Java StringBuffer void setLength(int newlen) method with Example
114. Java StringBuffer void trimToSize() method with Example
115. Different ways to take input from the user in Java (Examples)
116. Typecasting in Java
117. What are java files?
118. Java StringBuffer int lastIndexOf(String s , int srcindex) method with Example
119. Java StringBuffer int lastIndexOf(String s) method with Example
120. Java StringBuffer replace(int spos, int epos , String s) method with Example
121. Java StringBuffer CharSequence subSequence(int spos, int epos) method with Example
122. How to check if directory exists in Java?
123. How to check an object is null in Java?
124. How to set path in Java in Windows?
125. How to add characters to a string in Java?
126. How to check if string is number in java?
127. How to add double quotes to a string in Java?
128. Java File Class boolean createNewFile() method with Example
129. Java File Class boolean delete() method with Example
130. Java File Class String getName() method with Example
131. Java File Class boolean canExecute() method with Example
132. Java File Class boolean canRead() method with Example
133. Java File Class boolean canWrite() method with Example
134. How to avoid NullPointerException in Java?
135. Java File Class boolean setExecutable(boolean exec_file , boolean owner_access) method with Example
136. Java File Class boolean setExecutable(boolean exec_file) method with Example
137. Java File Class boolean setReadable(boolean read_file , boolean owner_read) method with Example
138. Java File Class boolean setReadable(boolean read_file) method with Example
139. Java File Class boolean isDirectory() method with Example
140. Java File Class boolean isFile() method with Example
141. Java File Class boolean isHidden() method with Example
142. Differences between static and non static method in Java
143. Java File Class String[] list() method with Example
144. Java File Class String[] list(FilenameFilter fnf) method with Example
145. Java File Class File[] listFiles() method with Example
146. Java File Class boolean exists() method with Example
147. Java File Class String getParent() method with Example
148. Java File Class File getParentFile() method with Example
149. Java File Class File[] listFiles(FileFilter ff) method with Example
150. Java File Class File[] listFiles(FilenameFilter fnf) method with Example
151. Java File Class String getPath() method with Example
152. Java File Class String getAbsolutePath() method with Example
153. Java File Class long getFreeSpace() method with Example
154. Differences between concat() method and plus (+) operator in Java
155. Java File Class int compareTo(File filepath) method with Example
156. Java File Class static File createTempFile(String file_name, String file_extension) method with Example
157. Java File Class long length() method with Example
158. Java File Class boolean mkdir() method with Example
159. Differences between Abstract class and Concrete class
160. Java File Class boolean isAbsolute() method with Example
161. Java File Class long lastModified() method with Example
162. Java File Class boolean renameTo(File new_pathname) method with Example
163. Java File Class boolean setLastModified(long set_new_time) method with Example
164. Java File Class boolean setReadOnly() method with Example
165. Java File Class URI toURI() method with Example
166. Java File Class int compareTo(Object o) method with Example
167. Java File Class boolean mkdirs() method with Example
168. Java File Class void deleteOnExit() method with Example
169. Can we overload main() method in Java?
170. Find maximum absolute difference in an array
171. Is main() method compulsory in Java?
172. Java Thread Class final void checkAccess() method with Example
173. Java Thread Class static int activeCount() method with Example
174. Java Thread Class static Thread currentThread() method with Example
175. Java Thread Class static void dumpStack() method with Example
176. Java Thread Class static int enumerate(Thread[] th) method with Example
177. Java Thread Class static Map getAllStackTraces() method with Example
178. Can we override main() method in Java?
179. How to remove a SubList from a List in Java?
180. java.util package in Java
181. Java Thread Class long getId() method with Example
182. Java Thread Class ClassLoader getContextClassLoader() method with Example
183. Java Thread Class static Thread.UncaughtExceptionHandler getDefaultUncaughtExceptionHandler() method with Example
184. How to run java class file which is in different directory?
185. Java Thread Class final String getName() method with Example
186. Java Thread Class final int getPriority() method with Example
187. Java Thread Class StackTraceElement[] getStackTrace() method with Example
188. Is it possible to have same data members in parent and child classes in Java?
189. Java Thread Class Thread.State getState() method with Example
190. Java Thread Class final ThreadGroup getThreadGroup() method with Example
191. Java Thread Class static boolean holdLock(Object o) method with Example
192. Java Thread Class Thread.UncaughtExceptionHandler getUncaughtExceptionHandler() method with Example
193. Different ways to print Exception message in Java
194. Java Thread Class void interrupt() method with Example
195. Java Thread Class static boolean interrupted() method with Example
196. Java Thread Class boolean isInterrupted() method with Example
197. Why does java file name must be same as public class name?
198. Differences between Iterator and ListIterator in Java
199. Interfaces used in Collection framework in Java
200. What is null in Java?
201. Java Thread Class final boolean isAlive() method with Example
202. Java Thread Class final boolean isDaemon() method with Example
203. Java Thread Class final void setDaemon(boolean thread_status) method with Example
204. Access specifiers in Java
205. Java Thread Class final void join() method with Example
206. Java Thread Class final synchronized void join(long time_in_ms) method with Example
207. Java Thread Class final void join(long time_in_ms, int time_in_ns) method with Example
208. Differences between constructors and methods in Java
209. Different ways to create an object in Java
210. Differences between Enumeration and Iterator in Java
211. Differences between Vector and ArrayList in Java
212. Java Thread Class public void run() method with Example
213. Java Thread Class public void start() method with Example
214. Java Thread Class String toString() method with Example
215. Java Thread Class static native void yield() method with Example
216. What are the non access modifiers in Java?
217. Java Thread Class static void sleep(long time_in_ms) method with Example
218. Java Thread Class static void sleep(long time_in_ms, int time_in_ns) method with Example
219. How to print elements of a Stream in Java 8?
220. Differences between StringJoiner and StringBuilder in Java 8
221. Java Thread Class static void setDefaultUncaughtExceptionHandler(Thread.UncaughtExceptionHandler excep_handler) method with Example
222. Java Thread Class final void setName(String thread_name) method with Example
223. Java Thread Class final void setPriority(int priority) method with Example
224. Java Thread Class public void setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler excep_handler) method with Example
225. Java Thread Class void setContextClassLoader(ClassLoader loader) method with Example
226. How to remove an entry from a Collection in Java?
227. How to sort objects of the Collection in Java?
228. Stack class in Collection Framework in Java
229. Differences between HashMap and LinkedHashMap in Java
230. Differences between Set and List interface in Java
231. Differences between HashSet and HashMap class in Java
232. Differences between HashSet and LinkedHashSet in Java
233. Differences between poll() and remove() methods of Queue Interface in Java
234. How to stop a thread in Java?
235. Differences between Set and Map interface in Java
236. Differences between List and Map interface in Java
237. Differences between Hashtable and HashMap class in Java
238. Differences between the reverse() and reverseOrder() in Java
239. Differences between submit() and execute() methods in Java
240. Differences between Synchronized Collection and Concurrent Collection in Java
241. Differences between the interrupted() and isInterrupted() in Java
242. Differences between wait() and sleep() methods in Java
243. Differences between HashMap and TreeMap in Java
244. Differences between HashSet and TreeSet in Java
245. Java Math Class static double acos(double d) method with example
246. Java Math Class static double asin(double d) method with example
247. Java Math Class static int abs(int i) method with example
248. Java Math Class static long abs(long l) method with example
249. Java Math Class static float abs(float f) method with example
250. Java Math Class static double abs(double d) method with example

SQL, DBMS

1. Difference between WHERE and HAVING clauses in SQL.
2. SQL Alias.
3. Differences between DBMS and RDBMS?
4. Transaction Control Language (TCL) commands in SQL.
5. SQL Clauses.
6. SQL Query to access first and last N records from a table.
7. Wildcard Operators in SQL.
8. SQL Query to find the Nth minimum Salary.
9. SQL Query to merge N columns as single column from a table.
10. SQL Query to fetch (print) Even and Odd records from a table.