Programmatically executing View criteria in VOImpl in ADF

Below is the code snippet to execute view criteria in your VOImpl

ViewCriteria vc = this.getViewCriteriaManager().getViewCriteria("DeptVOCriteria");

//Manages named variables and their values.         
VariableValueManager vvm = vc.ensureVariableManager();

// Set bind parameter values  
 vvm.setVariableValue("bindDept", <dept value>);

//apeend View Criteria
this.appendViewCriteria(vc);

// Executing the query          
 this.executeQuery();