Java: Create a new String object with the contents of a character array

Last update on May 21 2025 12:50:50 (UTC/GMT +8 hours)

11. String from Character Array

Write a Java program to create a String object with a character array.

Sample Solution:

Java Code:

// Define a public class named Exercise11.
public class Exercise11 {
    // Define the main method.
    public static void main(String[] args) {
        // Character array with data.
        char[] arr_num = new char[] { '1', '2', '3', '4' };

        // Create a String containing the contents of arr_num
        // starting at index 1 for length 3.
        String str = String.copyValueOf(arr_num, 1, 3);

        // Display the results of the new String.
        System.out.println("\nThe book contains " + str + " pages.\n");
    }
}

Sample Output:

The book contains 234 pages.

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to construct a string from a character array and then reverse it without using library methods.
• Write a Java program to build a string from a character array while removing any duplicate characters.
• Write a Java program to convert a character array to a string and then interleave it with another string.
• Write a Java program to create a string from a character array and then display the indices of each vowel.

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