Can I cast a null to reference type in Java?

Yes, you can cast a null to reference type in Java.

App.java

package com.sample.app;

public class App {
 public static void main(String args[]) {
  String s1 = null;
  String s2 = (String) null;
  Integer i1 = (Integer) null;
  Float f1 = (Float) null;
  
  //Integer i2 = (Integer) s1; You can't do this
  
  System.out.println("s1 : " + s1);
  System.out.println("s2 : " + s2);
  System.out.println("i1 : " + i1);
  System.out.println("f1 : " + f1);
 }
}

Output

s1 : null

s2 : null

i1 : null

f1 : null

You may like

Miscellaneous

Interview Questions

Programming Questions

Redirect System.err.println statements to a stream or file

How to add days to a date in Java?

Check whether given date is valid or not

Regex to check immediate repeated characters in a string

Is Java primitive data types stored in stack or heap?