Java does not have a concept of "X context".

PrintStream has several println methods, including one that takes an
Object argument. If cla is a reference to some object,
System.out.println(cla) prints the result of that object's toString
method. That happens regardless of what other methods the class has.

EVERY object has a public String toString() method, either declared or
inherited, because Object declares public String toString().

However, I am not sure what you mean by '"cla" is a class name. The
following program, with a class name as println argument, does not
compile because of a syntax error:

public class MyClass {
  public static void main(String[] args){
    System.out.println(MyClass);
  }
}

You can call println for the Class object associated with a class:

System.out.println(MyClass.class)

That prints the result of the toString method for the Class object for
MyClass, the word "class" followed by a space and the name of the class.

Note: Watch the capitalization. "class" means the general concept of a
class. "Class" means the class of the object the

Patricia