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Java String Exercises: Convert all the characters in a string to lowercase

Java String: Exercise-29 with Solution

Write a Java program to convert all the characters in a string to lowercase.

Pictorial Presentation:

Java String Exercises: Convert all the characters in a string to lowercase

Sample Solution:

Java Code:

public class Exercise29 {
       public static void main(String[] args)
    {
        String str = "The Quick BroWn FoX!";

        // Convert the above string to all lowercase.
        String lowerStr = str.toLowerCase();

        // Display the two strings for comparison.
        System.out.println("Original String: " + str);
        System.out.println("String in lowercase: " + lowerStr);
    }
}

Sample Output:

Original String: The Quick BroWn FoX!                                                                         
String in lowercase: the quick brown fox!

Flowchart:

Flowchart: Java String Exercises - Convert all the characters in a string to lowercase

Visualize Java code execution (Python Tutor):


Java Code Editor:

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Previous: Write a Java program to create a character array containing the contents of a string.
Next: Write a Java program to convert all the characters in a string to uppercase.

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Java: Tips of the Day

Directory Content:

Java allows you to get the names of all subdirectories and files in a folder as an array, which can then be sequentially viewed.

import java.io.*;
  
public class ListContents {
  public static void main(String[] args) {
    File file = new File("//home//user//Documents/");
    String[] files = file.list();
  
    System.out.println("Listing contents of " + file.getPath());
    for(int i=0 ; i < files.length ; i++)
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      System.out.println(files[i]);
    }
  }
}