コンストラクタの説明用

hoge.java

public class hoge {

    public static void main (String[] args) {

        System.out.println("Starting function main.");
        System.out.println("Creating instance from Fuga class.");
        Fuga fuga = new Fuga();
        System.out.println("Ending function main.");

    }

}

class Fuga {

    Fuga () {
        System.out.println("This is fuga constructor.");
    }

}