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If you have a decoded array of numbers (e.g., ASCII codes) and want to convert it into a readable string in Java, you can map each number to its corresponding character and then combine them.
Example:
public class NumberArrayToString {public static void main(String[] args) {int[] decodedNumbers = {72, 101, 108, 108, 111}; // ASCII for "Hello"// Method 1: Using StringBuilderStringBuilder sb = new StringBuilder();for (int num : decodedNumbers) {sb.append((char) num);}String result = sb.toString();System.out.println(result); // Output: Hello}}Copied!✕CopyUsing Arrays.stream() (Java 8+) You can leverage streams for a more functional approach:
import java.util.Arrays;import java.util.stream.Collectors;public class StreamConversion {public static void main(String[] args) {int[] decodedNumbers = {87, 111, 114, 108, 100}; // "World"String result = Arrays.stream(decodedNumbers).mapToObj(c -> String.valueOf((char) c)).collect(Collectors.joining());System.out.println(result); // Output: World}}Copied!✕Copy How to Convert an Array to String in Java? - GeeksforGeeks
Jul 12, 2025 · In Java, there are different ways to convert an array to a string. We can choose ways from built-in methods or custom approaches, depending on the type of arrays.
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