The callable interface in Java

I. Overview

The interface is located under the Java.util.concurrent package, declared: Publicinterfacecallable<v> V - Call The result type of the method

A task that returns the result and may throw an exception. The implementing person defines a method called call without any parameters . The callable interface is similar in Runnable that both are designed for classes whose instances might be executed by another thread. However, Runnable does not return a result and cannot throw a checked exception. Executorsclass contains some practical methods for converting from other ordinary forms to callable classes.

Second, the method

Pager () throws Exception  

 
   
  

  
    
   

     Evaluates the result and throws an exception if the result cannot be evaluated. 
    
 
 
   
  
    
   
 
    
 
     
 
      Return: 
     
 
     

       The result of the calculation 
     
 
     
 
      Thrown: 
     
 
     
 
      Exception-If the result cannot be calculated 
     
 
    
 
   
 
   
  

The callable interface in Java