Arraylist is an index based Data Structure. While using Arraylist for searching or getting an element from an array with index is pretty fast. ArrayList
Category: Java
How to create and modify function using Jshell in Java CLI
To use the jShell effectively, You must be able to create function so that you can test your functionality quickly and it will be really
How to access REF CURSOR Data in Java ?
In Java, a REF CURSOR is known as a ResultSet object and can be accessed as shown below: import oracle.jdbc.*; … CallableStatement cstmt; ResultSet cursor; // Use a PL/SQL block
Convert List to a Set / Set to List in Java
In Java, When we are working on real time projects.. Generally we came across scenarios like Converting List to Set Object or Vice Versa. 1.
JAR vs. WAR vs. EAR
In J2EE application modules are packaged as EAR, JAR and WAR based on their functionality JAR: EJB modules which contains enterprise java beans class
java.lang.ClassCastException: org.hibernate.impl.CriteriaImpl cannot be cast to com.YourClass
When working on any application which Uses Java + Hibernate 3, you face errors like the one shown below: java.lang.ClassCastException: org.hibernate.impl.CriteriaImpl cannot be cast to
How to iterate HashMap in Java ?
public static void printMap(Map mp) { Iterator it = mp.entrySet().iterator(); while (it.hasNext()) { Map.Entry pair = (Map.Entry) it.next(); System.out.println(pair.getKey() + ” = ” +
Why List = new ArrayList() ? in Java
The main reason you’d do this is to decouple your code from a specific implementation of the interface. When you write your code like this: