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renu anamalla 9renu anamalla 9 

Null pointer exception n view state and view state error

Please explain briefly...how to reduce the view state n how solve the nullpointer give me one example
Anupama SamantroyAnupama Samantroy
Hi Renu,

1. To know about View state nothing better than the salesforce documentation. Link https://developer.salesforce.com/page/An_Introduction_to_Visualforce_View_State
2. Null pointer exception occurs when you are trying to use any object without initialization. For eg.  
Account a;

If(a.Name =='Test') //this will give a null pointer exception. 

//Correct
Account a = new account();
//now you can access the fields of Account

Thanks
Anupama
Garima SGarima S
1. Null pointer exception is caused by a line of code that is trying to use an object that has not been instantiated, or an object's attribute that has not been initialized.
2. View State :Salesforce allows Visualforce pages to have a maximum view state size of 135KB. A smaller view state size generally means quicker load times. In order to avoid this error, minimize your pages' view state.
Here is good explaination to handle view state :https://developer.salesforce.com/page/An_Introduction_to_Visualforce_View_State

This will be helpful to resolve your problem.

Thanks,