Explain the elementary concept of objects and classes in java?

Question

I am the student of 9th ICSE . We don't have a proper teacher to teach in school.

Answer 1

Objects have properties and can do things, classes are blueprints for objects.
Ask if I should explain it in detail.

Answer 2

And also I have another doubt

Answer 3

That what is meant by methods and how many methods are there in Java.

Answer 4

Sharukesh methods are actions the object can do. For example:

System.out.print("Hello world");

'System' object has a field 'out' that contains object that can print text. You tell that object to show text "Hello world" by calling it's "print" method.