Java: Convert a given string into lowercase

Last update on April 01 2025 10:50:49 (UTC/GMT +8 hours)

Convert to Lowercase

Write a Java program to convert a string into lowercase.

Pictorial Presentation: String to Lowercase

Sample Solution:

Java Code:

import java.util.*;
public class Exercise59 {
    public static void main(String[] args) {
        // Create a Scanner object for user input
        Scanner in = new Scanner(System.in);
        System.out.print("Input a String: ");
        
        // Read a string from the user
        String line = in.nextLine();
        
        // Convert the string to lowercase
        line = line.toLowerCase();
        
        // Print the lowercase version of the input string
        System.out.println(line);
    }
}

Sample Output:

Input a String: THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG.           
the quick brown fox jumps over the lazy dog.

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to convert all uppercase vowels in a string to lowercase while keeping other characters unchanged.
• Write a Java program to convert uppercase characters to lowercase without using built-in functions.
• Write a Java program to convert a mixed-case string to lowercase while reversing the order of words.
• Write a Java program to convert all uppercase characters to lowercase but keep the first letter of each word capitalized.

Java Code Editor:

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