Exceptions are the objects representing the logical errors that occur at run time

Throwable is the super class for both exception and error

It is possible to have try block without catch block by using finally block

It is not possible prior to java 7. new feature added in java 7.

Static means class level. and we can access through not static methods also. But it is not part of object.

This always points to current class object which is under execution

No we can not use this in static methods. if we try to use compile time error will come:Cannot use this in a static context

We can call static methods using this from non static methods but it is not recommended : The static method should be accessed in a static way.

Yes We can return this as current class object.

Defining multiple methods with same name and with different arguments is known as method overloading

Defining multiple methods with same name and with different arguments is known as method overloading

We can overload main method public static void main Strung []args only will be called by jvm. other methods needs to call explicitly by programmer. Means they acts as normal methods

Return type is not considered in overloading. we can define two methods with same return type also a.

We can define a method name as class name then there will not be any no compile time error or run time errors.We can define any name as method name. But as per coding standards of java it is not recommended to use class name as method name

Constructor does not have return type. if we add any return type then it will become a normal method. JVM treats that as method

We can declare constructor as private.Usage: In order to restrict object creation outside of class we should define constructor as private

When default constructor is created the its accessibility modifier will be assigned as same as class accessibility modifier

when constructor called A() will be called and first statement this(0) control will go to constructor with int argument A(int x) and in this constructor first statement is this(0,0)control will go to constructor with int argument A(int x,int y). and will execute print statement and control get back to A(int x) and completes constructor execution and will go to A().