Below are the four simple ways
you can convert Char[] to String in Java.
- Using new String(char[]). Using String Constructor.
- Using valueOf(char[])
- Using StringBuilder()
- Create your own REGEX operation Search and replace.
Please be careful about Arrays.toString(char[])
, that returns a string representation of the contents of the specified array. The string representation consists of a list of the array’s elements, enclosed in square brackets (“[]”).
Java program:
Create file CrunchifyCharArrayToString.java
. Put below code into it.
package crunchify.com.tutorials; import java.util.Arrays; /** * @author Crunchify.com * In Java How to Convert Char Array to String (four ways) - char[] to String() * */ public class CrunchifyCharArrayToString { public static void main(String[] args) { char[] crunchifyCharArray = new char[]{'T', 'H', 'I', 'S', ' ', 'I', 'S', ' ', 'C', 'R', 'U', 'N', 'C', 'H', 'I', 'F', 'Y'}; // Method-1: Using new String(char[]). Using String Constructor. // Allocates a new String so that it represents the sequence of characters currently contained in the character array argument. String crunchifyResult = new String(crunchifyCharArray); System.out.println("Result new String(char[]): " + crunchifyResult); // Method-2: Using valueOf(char[]) // Returns the string representation of the char array argument. The contents of the character array are copied; subsequent modification of the character array does not affect the returned string. String crunchifyResult2 = String.valueOf(crunchifyCharArray); System.out.println("Result valueOf(char[]) : " + crunchifyResult2); // Method-3: Using StringBuilder() // Constructs a string builder with no characters in it and an initial capacity of 16 characters. StringBuilder crunchifyStringBuilder = new StringBuilder(); for (char myCh: crunchifyCharArray) { crunchifyStringBuilder.append(myCh); } String crunchifyResult3 = crunchifyStringBuilder.toString(); System.out.println("Result StringBuilder() : " +crunchifyResult3); // Method-4: Create your own REGEX operation :) Search and replace String crunchifyResult4 = Arrays.toString(crunchifyCharArray) .substring(1, 3*crunchifyCharArray.length-1) .replaceAll(", ", ""); System.out.println("Result custom method: regex replaceAll() : " + crunchifyResult4); // Be careful about Arrays.toString(char[]) // Returns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). String crunchifyResult5 = Arrays.toString(crunchifyCharArray); System.out.println("\nBe Careful about Arrays.toString(char[]) : " + crunchifyResult5); } }
Eclipse Console Result:
Just run above program as a Java Application and you should see result like below.
Result new String(char[]): THIS IS CRUNCHIFY Result valueOf(char[]) : THIS IS CRUNCHIFY Result StringBuilder() : THIS IS CRUNCHIFY Result custom method: regex replaceAll() : THIS IS CRUNCHIFY Be Careful about Arrays.toString(char[]) : [T, H, I, S, , I, S, , C, R, U, N, C, H, I, F, Y] Process finished with exit code 0
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