Java Nullpointerexception Error Code Example

Snippet 1
  // A Java program to demonstrate that invoking a method 
// on null causes NullPointerException 
class GFG 
    public static void main (String[] args) 
        // Initializing String variable with null value 
        String ptr = null; 
        // Checking if ptr.equals null or works fine. 
            // This line of code throws NullPointerException 
            // because ptr is null 
            if (ptr.equals("gfg")) 
                System.out.print("Not Same"); 
        catch(NullPointerException e) 
            System.out.print("NullPointerException Caught"); 

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