Example of using ArrayList
In the previous post, we have see how to initialize the ArrayList. In this post, we will example of using ArrayList. ArrayList is a class which implements List Interface. It is an good alternative...
Category: Java
ArrayList in Java
ArrayList: ArrayList is resizable-array implementation of the List interface. It implements all optional list operations, and permits all elements, including null. This class provides methods to manipulate to the size of array that is used...
Initialize the ArrayList in Java
Java collection framework was non-generic before JDK 1.5. Since 1.5, it is generic. Java generic collections allows you to have one type of object in collection i.e. you can create collection for String type...
Find out words occurrences in a file
In the previous post, we have seen how to find common elements among 2 unsorted arrays. In this post, we will see how to get the count of same word occurrences in a file....
Find common elements among two unsorted arrays
Sometimes, you may face this situation that you have 2 arrays and both are unsorted. You need to compare them and find out the common values. How to find out common elements in...
Regular Expression part 2 in java
In the part 1 , we have seen what is regular expression and its syntax. In part 2, we will understand how to use regular expression with examples. Example 1: We can use any...
Regular expression part 1 in java
In the previous post, we have seen the conditional statements. In this post, we will learn about the regular expression in java. What is regular expression? A regular expression is nothing but a String...
switch case in java
In the previous post, we have seen if..else if conditional statements. In this post, we will learn what is switch case in java. switch case is an alternative of if else statements. It is used to control...
elseif statement in java
In the previous post, we have seen if else statement. In this post, we will learn about elseif statements. If we have multiple verification check points, we can use elseif statements. A if statements can be...
if statement in java
In the previous post, we have seen the working of for each loop in java. In this post, we will look at if statement in java. In every programming language, at some point we...