Convert Char Array to a String in Java [2 Methods]

Summary: In this programming example, we will learn to convert a char array into a string in Java.

Example:

char array[] = {'p', 'r', 'o', 'g', 'r', 'a', 'm', 'm', 'e', 'r'}
String str = "programmer"

Method 1: using String.valueOf()

The String class’s valueOf() method converts a char array passed as an argument into a string in Java.

import java.util.*;
 
public class Main
{
	public static void main(String[] args) {
	    
	    char array[] = {'p', 'r', 'o', 'g', 'r', 'a', 'm', 'm', 'e', 'r'};
		String str = String.valueOf(array);
		
		System.out.println("String: "+ str);
	}
}

Output:

String: programmer

We should not use the toString() method to convert a char array into a string as it will return the trash value instead.

Method 2: using String Constructor

The String class has an overloaded parametrized constructor that takes a char array as an argument and thus internally converts it to a string.

import java.util.*;
 
public class Main
{
	public static void main(String[] args) {
	    
	    char array[] = {'p', 'r', 'o', 'g', 'r', 'a', 'm', 'm', 'e', 'r'};
		String str = new String(array);
		
		System.out.println("String: "+ str);
	}
}

Output:

String: programmer

There are also some other ways to convert a char array to a string, for example, using StringBuilder but it’s not so efficient and comparatively requires more boilerplate code.