Java: Test if a given string contains the specified sequence of char values

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

8. Contains Specified Sequence

Write a Java program to test if a given string contains the specified sequence of char values.

Visual Presentation:

Sample Solution:

Java Code:

// Define a public class named Exercise8.
public class Exercise8 {
    // Define the main method.
    public static void main(String[] args) {
        // Declare and initialize two string variables, str1 and str2.
        String str1 = "PHP Exercises and Python Exercises";
        String str2 = "and";
        
        // Print the original string.
        System.out.println("Original String: " + str1);
        // Print the specified sequence of char values.
        System.out.println("Specified sequence of char values: " + str2);
        
        // Check if str1 contains the sequence specified in str2 and print the result.
        System.out.println(str1.contains(str2));
    }
}

Sample Output:

Original String: PHP Exercises and Python Exercises                                                           
Specified sequence of char values: and                                                                        
true 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to determine if a string contains a specified subsequence of characters in order.
• Write a Java program to check if all characters of a given word appear in order within a larger string.
• Write a Java program to verify whether a user-defined sequence of characters is present in a string, ignoring case.
• Write a Java program to test if a string contains multiple specified substrings and display which ones are missing.

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