In Java: JFrame objects constructed with the no-argument constructor are untitled. True or false?

Where is LineManager.java? Write a java class for LineManager.java where the members and constructors are correct

question for  Java  a class demo has three objects  Car car = new Car("make:Honda","color:Black",0.2);Car car2 = new Car("make:Ford","color:blue", 0.5);Car car3 = new Car("make:Tesla","color:silver",1.2); how to make a scanner to get speed from the user and add the speed with the last value of the object for example Honda (speed+0.2)

I need this in Java please ASAP!

Using this link: https://docs.oracle.com/javase/tutorial/java/concepts/interface.html and                           https://docs.oracle.com/javase/tutorial/java/concepts/class.html Create in Java: An interface named bicycle as described in the section: What is an interface? Add a new method for the interface bicycle: ring the bell with a parameter indicating how many time.  Pick a bicycle brand and create a new class of bicycles for that brand, as described in the sections What is an interface? and What is a Class? For the new method implementation, write in the console "Clang! Clang!..." for how many times the parameter indicates. Create another class, with a main method, in which you will take a trip aroound your house, changing your bicycle attributes, starting and ending from a complete stop, and ringing the bell once at start and twice at the end. Use as inspiration the method in What is a Class? Your trip must have at least 5 different parts in which you change your bicycle…