Java: Compare a given string to the specified string buffer

Last update on May 21 2025 12:49:30 (UTC/GMT +8 hours)

10. Compare with StringBuffer

Write a Java program to compare a given string to a specified string buffer.

Sample Solution:

Java Code:

// Define a public class named Exercise10.
public class Exercise10 {
    // Define the main method.
    public static void main(String[] args) {
        // Declare and initialize two string variables, str1 and str2.
        String str1 = "example.com", str2 = "Example.com";
        
        // Create a StringBuffer object strbuf initialized with the value of str1.
        StringBuffer strbuf = new StringBuffer(str1);
    
        // Compare str1 and strbuf for content equality and print the result.
        System.out.println("Comparing " + str1 + " and " + strbuf + ": " + str1.contentEquals(strbuf));
    
        // Compare str2 and strbuf for content equality and print the result.
        System.out.println("Comparing " + str2 + " and " + strbuf + ": " + str2.contentEquals(strbuf));
    }
}

Sample Output:

Comparing example.com and example.com: true                                                                   
Comparing Example.com and example.com: false 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to compare a string with the contents of a StringBuffer after reversing its characters.
• Write a Java program to test equality between a string and a StringBuffer after converting both to lowercase.
• Write a Java program to compare two strings, one provided as a StringBuffer and one as a literal, for exact match.
• Write a Java program to compare a string with a substring extracted from a StringBuffer, handling potential exceptions.

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