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Tip of the Day
Language: Java
Expertise: Beginner
Nov 7, 2018

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


Testing if an Object can be Cast Using Instanceof

Java provides the instanceof operator to test if an object is of a certain type, or a subclass of that type. The program can then choose to cast or not cast that object accordingly.

Object obj = Calendar.getInstance(); 
long time = 0; 
if(obj instanceof Calendar) { 
time = ((Calendar)obj).getTime();
 } 
if(obj instanceof Date) { 
time = ((Date)obj).getTime(); // This line will never be reached, obj is not a Date type. 
}
OCTAVIA ANGHEL
 
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