Attempt to invoke virtual method 'boolean java.lang.String.equalsIgnoreCase(java.lang.String)' on a null object reference code example

Example 1: Attempt to invoke virtual method 'boolean java.lang.String.equalsIgnoreCase(java.lang.String)' on a null object referen

if (called_from != null && called_from.equalsIgnoreCase("add")) {

Example 2: boolean java.lang.String.equals(java.lang.Object)' on a null object reference

if (called_from != null && called_from.equalsIgnoreCase("add")) {

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