How to convert a String to Char Array in Java?

In Java,The Easy way to convert simple String to Char Array. Question How to convert String to Char Array in Java? and how to iterate through an arraylist in java?

Sometimes I have to convert data String to the char array in java programs as well as convert a data string to char from each array index.

Java: Simple way to convert String to Char Array

Given a below text a string, the program is to convert this data string into a character array in Java.

  • Phase 1: Fetch the string.
  • Phase 2: Make a character array of the all the length as of data string.
  • Phase 3: range over the data string to copy all the character at the n’th index of string to n’th last index in the Your array.
  • Phase 4: and last Return or execute the operation on the data character array.
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6 ways to convert char to String in Java

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3 methods related to char in String Class

char[] toCharArray():
char charAt(int index)
getChars(int srcBegin, int srcEnd, char dst[], int dstBegin)

Java Source Code:

package com.pakainfo;
 
/**
 * @author Pakainfo.com
 */
 
public class PakainfoStringToCharArray {
 
	public static void main(String[] args) {
		String userDataString = "Welcome To Pakainfo";
		char[] stringToCharArray = userDataString.toCharArray();
 
		for (char output : stringToCharArray) {
			System.out.println(output);
		}
	}
}

Output:

W
e
l
c
o
m
e
 
T
0
 
P
a
k
a
i
n
f
o

Using Naive Approach

Java program to Convert a String to a Character array using Naive Approach

Examples:

Input:  Welcome To Pakainfo
Output:  [W, e, l, c, o, m, e, , T, o, , P, a, k, a, i, n, f, o]

Input:  PakainfoCom
Output:  [P, a, k, a, i, n, f, o, C, o, m]

// Java Example to Convert a String 
// to a Character array using Naive Approach 

import java.util.*; 

public class Pakainfo { 

	public static void main(String args[]) 
	{ 
		String userDataString = "PakainfoCom"; 

		// Making array of string length 
		char[] ch = new char[userDataString.length()]; 

		// Copy character by character into array 
		for (int i = 0; i < userDataString.length(); i++) { 
			ch[i] = userDataString.charAt(i); 
		} 

		// displaying content of array 
		for (char c : ch) { 
			System.out.println(c); 
		} 
	} 
} 

Output:

P
a
k
a
i
n
f
o
C
o
m

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