ARRAYLIST in java

ArrayList implements all List operations using List interface and is also accept null values.The ArrayList is re sizable i.e shrinks and grows automatically and it has a capacity .

The class hierarchy is as follow:
---->Java.Lang.Object
      ----->Java.Util.AbstactCollection
                ----->Java.Util.AbstractList
                        ------>Java.Util.ArrayList

The array list contains following methods for implementing different operations

Return type	Method name
void	add (int index, Object o)
boolean	add (Object o)
boolean	addAll (Collection c)
boolean	addAll (int index,Collection c)
void	clear ( )
Object	clone ( )
boolean	contains (Object o )
Object	get (int index)
int	indexOf(Object o)
boolean	isEmpty( )
int	lastIndexOf( Object o)
Object	remove( int index)
Protected void	removeRange( int fromIndex, int toIndex)
Object	set (int index, Object o)
int	size ( )
Object [ ]	toArray( )
Object [ ]	toArray (Object [ ] a)
void	trimToSize( )

OPERATOR PRECEDENCE IN JAVA

Operators in Java are special symbols that executes specific operations on one, two, or three operand/operands, and then return a result.They moves to left to right or right to left.In the table bellow all the Java operators has been described with examples

ACCESS MODIFIER IN JAVA

There are 4 access modifier in core Java. They are public, private, protected and default.
The table bellow shows the access of class with different modifier

Access Modifier table

Visibility	PUBLIC	PROTECTED	DEFAULT	PRIVATE
Access from the same class	YES	YES	YES	YES
Acces from any class in same package	YES	YES	YES	NO
From subclass in same package	YES	YES	YES	NO
Access from subclass outside package	YES	YES through inheritance	NO	NO
Access from any non subclass outside package	YES	NO	NO	NO