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Array List Example in java

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ArrayList<Object> arl=new ArrayList<Object>(); what Object indicates in above definition. clone(); What is the function of clone method. 

array list
instead of creating an object in main method why cannot we use same class name by calling it s predifned method s in array list what is the reason  

ArrayList prog SOLUTION
Create an employee class with an employee id's,name & address. Store some objects of this class in an arraylist. When an employee id is given, display his name & address? Please provide the java code for this query 

please give example using base class and sub class...then use arraylist to store different subclasses derived from a single base class 

Very useful and understandable example 

arrays programming
hoping that u post many examples of arrays. 

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