Comparing Strings using POJO

Comparing two strings using POJOs (Plain Old Java Objects) isn’t the most common approach, but it can be useful in specific situations. Here’s how you could achieve it:

1. Define a POJO class to represent strings:

Java

public class StringData {
    private String value;

    public StringData(String value) {
        this.value = value;
    }

    // Getters and setters for value
    // ...
}

2. Implement comparison logic in the POJO class:

There are different ways to compare strings within your POJO, depending on your specific needs:

• Lexicographic comparison: Use the compareTo() method on the value strings.
• Character-by-character comparison: Iterate over the characters of both strings and compare them individually.
• Set-based comparison: Convert the strings to sets and compare the sets for equality.

Here’s an example using lexicographic comparison:

Java

public class StringData {
    // ...

    public boolean compareLexicographically(StringData other) {
        return this.value.compareTo(other.value) == 0;
    }
}

3. Use the POJO for comparison:

Create instances of StringData for the strings you want to compare and call the appropriate comparison method:

Java

StringData string1 = new StringData("apple");
StringData string2 = new StringData("banana");

boolean areEqual = string1.compareLexicographically(string2);

System.out.println("Strings are lexicographically equal: " + areEqual);

Remember:

• This approach might be less efficient than using built-in string comparison methods like equals() or compareTo() directly.
• POJO comparison is more suitable when you need to compare strings based on additional attributes or logic beyond their simple values.

Example