🚀 Programming Example

Write a Java program to replace each substring of a given string that matches the given regular expression with the given replacement.
Sample string : "The quick brown fox jumps over the lazy dog."
In the above string replace all the fox with cat.

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💻 Practical Program

📘 Step Learning

Java program to replace each substring of a given string that matches the given regular expression with the given replacement.

💻 Program Code

public class Exercise {

   public static void main(String[] args)
    {
        String str = "The quick brown fox jumps over the lazy dog.";

         // Replace all the 'dog' with 'cat'.
        String new_str = str.replaceAll("fox", "cat");

         // Display the strings for comparison.
        System.out.println("Original string: " + str);
        System.out.println("New String: " + new_str);
    }
}

🖥 Program Output

Original string: The quick brown fox jumps over the lazy dog.
New String: The quick brown cat jumps over the lazy dog.
Press any key to continue . . .

📘 Explanation

None

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.

⚡ Quick Practice Flow

Follow this learning sequence for better understanding.

Read the topic carefully
Understand the algorithm
Study the code line-by-line
Check the output result
Practice by modifying logic

Write a Java program to replace each substring of a given string that matches the given regular expression with the given replacement.
Sample string : "The quick brown fox jumps over the lazy dog."
In the above string replace all the fox with cat.

💻 Program Code

🖥 Program Output

📘 Explanation

Master Programming Through Practical Examples

🎯 How to learn from this example

🔥 Practice suggestion

⚡ Quick Practice Flow

📚 Related Programs

Write a Java program to replace each substring of a given string that matches the given regular expression with the given replacement. Sample string : "The quick brown fox jumps over the lazy dog." In the above string replace all the fox with cat.

💻 Program Code

🖥 Program Output

📘 Explanation

Master Programming Through Practical Examples

🎯 How to learn from this example

🔥 Practice suggestion

⚡ Quick Practice Flow

📚 Related Programs

Write a Java program to replace each substring of a given string that matches the given regular expression with the given replacement.
Sample string : "The quick brown fox jumps over the lazy dog."
In the above string replace all the fox with cat.