Java Float To String Conversion Examples

1. Introduction

In this article, We'll learn how to convert Float values to String. This is a common scenario to the developers and how conversions can be done using Java API methods.

String and Float classes have been provided with utility methods and these methods are always defined as static because directly can be accessed with the class names.

All examples are designed to show the conversion of primitive float and wrapper float to String objects.

Java String toCharArray() - How to convert string to char array?

Java String toCharArray():

The java string toCharArray() method converts this string into character array. It returns a newly created character array, its length is similar to this string and its contents are initialized with the characters of this string.

Returns a newly allocated character array whose length is the length of this string and whose contents are initialized to contain the character sequence represented by this string.

Syntax:

public char[] toCharArray​()

How To Convert ArrayList To String Array In Java 8 - toArray() Example

1. Overview

In this article, You're going to learn how to convert ArrayList to String[] Array in Java. ArrayList is used to store the List of String using the toArray() and Stream API toArray() method.

Java String getChars()​ Method Example

1. Overview

In this quick tutorial, We'll learn about String getChars​ method with examples. As well will take a look at internally how getChars​ method implemented and works.

2. getChars​

This method copies the characters from this string into the destination character array. Also getChars​() method copies only a specified range of characters into new char array.
Source String start index, end index and destination array start index can be configured.

Java Program To Convert String to int or Integer

How to convert a String to Integer wrapper class or int primitive type?
Differences between Integer.parseInt(String s) and Integer.valueOf(String s)?

Converting Java String to Integer:

In some cases, we may be getting numbers in format of String so need to convert to integer for our process.

Eg. Given string like "9876" than result would be 9876 int type.

We can perform Java String to Integer operation in 3 ways. 

1) Integer.parseInt(String s) method  

2) Integer. valueOf(String s)  method 

3) Integer Constructor

How to convert a String to an int in Java?

We will learn today, How to convert String to Int in java. This is very popular written test question in Java interviews.

For example, We have a String "12345" and now I want to represent it in integer.

We can do conversion in 4 ways.

1) Integer.parseInt method.
2) Integer.valueOf
3) Integer constructor
4) DecimalFormat class