Java 11 and 12 – New Features

Additional methods and constructors

The compiler generates a default constructor for a data class, along with accessor methods and the default implementation of the methods from the object class. A developer can overload the constructors and add more methods to a data class, as follows:

record Emp(String name, int age) { 
    // overloading constructor 
    public Emp(String name, String style) { 
            this.name = name; 
            if (style.equals("COOL") age = 20; 
            else if (style.equals("SAFE") age = 30; 
            else if (style.equals("ELEGANT") age = 50; 
            else age = 70; 
        } 
    } 
    public String fancyOutput() {                 // additional method 
        return "My style is COOL"; 
    } 
}