Mastering Char-String Conversions in Java

The Power of Conversion

Understanding how to convert between characters and strings is crucial when working with Java. In this article, we’ll explore three essential examples that will help you master these conversions.

From Char to String: Unlocking the Secret

Imagine having a character stored in a variable, and you need to convert it to a string. The solution lies in the Character class’s toString() method. By using this method, you can effortlessly convert a character to a string.

char ch = 'a';
String st = Character.toString(ch);

Alternatively, you can utilize the String class’s valueOf() method to achieve the same result. Interestingly, both methods internally perform the same operation.

char ch = 'a';
String st = String.valueOf(ch);

Converting Char Arrays to Strings: A Step Up

What if you have a char array instead of a single character? No problem! You can easily convert it to a string using String methods.

char[] ch = {'a', 'e', 'i', 'o', 'u'};
String st = String.valueOf(ch);

Another approach is to use the String constructor, which takes a character array as a parameter. This method also yields the same result.

char[] ch = {'a', 'e', 'i', 'o', 'u'};
String st = new String(ch);

Reversing the Process: From String to Char Array

But what about converting a string to a char array? This can be achieved using the String class’s toCharArray() method.

String st = "hello";
char[] chars = st.toCharArray();

By using this method, you can convert a string to an array of characters. To print the elements of the char array in an array-like form, you can utilize the Arrays class’s toString() method.

import java.util.Arrays;

String st = "hello";
char[] chars = st.toCharArray();
System.out.println(Arrays.toString(chars));

With these three examples, you now possess the knowledge to effortlessly convert between characters and strings in Java.