Java: Concatenate a given string to the end of another string

Last update on May 21 2025 12:49:31 (UTC/GMT +8 hours)

7. Concatenate Two Strings

Write a Java program to concatenate a given string to the end of another string.

Visual Presentation:

Sample Solution:

Java Code:

// Define a public class named Exercise7.
public class Exercise7 {
    // Define the main method.
    public static void main(String[] args) {
        // Declare and initialize two string variables, str1 and str2.
        String str1 = "PHP Exercises and ";
        String str2 = "Python Exercises";
        
        // Print the first string.
        System.out.println("String 1: " + str1);
        // Print the second string.
        System.out.println("String 2: " + str2); 
       
        // Concatenate the two strings together and store the result in str3.
        String str3 = str1.concat(str2);

        // Display the newly concatenated string.
        System.out.println("The concatenated string: " + str3);
    }
}

Sample Output:

String 1: PHP Exercises and                                                                                   
String 2: Python Exercises                                                                                    
The concatenated string: PHP Exercises and Python Exercises

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to concatenate two strings and then intersperse a delimiter between their characters.
• Write a Java program to join three user-input strings into one, ensuring proper spacing and punctuation.
• Write a Java program to merge two strings character by character, concatenating them into a new string.
• Write a Java program to concatenate two strings and then reverse the resulting string.

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