Entities and POJOs must have a usable public constructor. You can have an empty constructor or a constructor whose parameters match the fields (by name and type). public class Word { ^ Tried the following constructors but they failed to match:

It seems like you are encountering an error message related to constructors in Java. This error message is indicating that you need to have a usable public constructor in your class, either an empty constructor or a constructor with parameters that match the fields in the class.

For example, if you have a class called "Word" with fields "word" and "definition", you could have a constructor like this:

public class Word {
    private String word;
    private String definition;
    
    public Word() {
        // Empty constructor
    }
    
    public Word(String word, String definition) {
        this.word = word;
        this.definition = definition;
    }
    
    // Getters and setters for word and definition
}

This would allow you to create instances of the Word class using either the empty constructor or the constructor with parameters that match the fields.

I hope that helps! Let me know if you have any other questions.