Chaitanya Singh – Page 107

Delete all the elements from HashSet

Last Updated: September 11, 2022 by Chaitanya Singh | Filed Under: java

Here we are gonna see how to remove all the elements of HashSet in one go. We can do so by calling clear() method of… [Read More]

How to copy one Set to another Set

Last Updated: September 11, 2022 by Chaitanya Singh | Filed Under: java

In this article we are gonna see an example program to copy one Set to another Set. Example In this example we are copying one… [Read More]

How to Iterate over a Set/HashSet

Last Updated: September 11, 2022 by Chaitanya Singh | Filed Under: java

There are following two ways to iterate through HashSet: 1) Using Iterator 2) Without using Iterator Example 1: Using Iterator import java.util.HashSet; import java.util.Iterator; class… [Read More]

Difference between String and StringBuffer

Last Updated: June 9, 2024 by Chaitanya Singh | Filed Under: java

In this article, we will discuss the difference between String and StringBuffer. Both of these classes used to handle sequence of characters. However they are… [Read More]

Difference between StringBuilder and StringBuffer

Last Updated: September 11, 2022 by Chaitanya Singh | Filed Under: java

In this article we are gonna discuss the differences between StringBuilder and StringBuffer. Before discussing the differences, lets have a look at what java documentation… [Read More]

Java StringBuffer substring()

Last Updated: October 9, 2022 by Chaitanya Singh | Filed Under: java

In this tutorial, we will discuss the Java StringBuffer substring() method with the help of examples. The syntax of substring() method is: sb.substring(4) //substring starting… [Read More]

Java StringBuffer replace()

Last Updated: October 9, 2022 by Chaitanya Singh | Filed Under: java

In this tutorial, we will discuss Java StringBuffer replace() method with the help of examples. Syntax of replace() method: //replace substring from index 4 to… [Read More]

StringBuilder append() null values as “null” String

Last Updated: October 6, 2022 by Chaitanya Singh | Filed Under: java

While working with StringBuilder you may have come across a strange behaviour of append() method for null values. If you append a null value to… [Read More]

How to append a newline to StringBuilder

Last Updated: October 6, 2022 by Chaitanya Singh | Filed Under: java

There are following two ways to append a new Line to a StringBuilder object:1) StringBuilder.append(“\n”);2) StringBuilder.append(System.getProperty(“line.separator”)); Example In this example we have a StringBuilder object… [Read More]

Java – Get Set view of Keys from HashMap

Last Updated: September 11, 2022 by Chaitanya Singh | Filed Under: java

Description Program to get the Set of keys from HashMap. Example import java.util.Iterator; import java.util.HashMap; import java.util.Set; class HashMapExample{ public static void main(String args[]) {… [Read More]