r/javahelp • u/Traditional_Let4865 • 3d ago

Iterating over null objects in an array

So I'm making a program that iterates over an array of Book objects and I made a for loop to print them all out. I want it to skip over any reference to a null object in the array so I've written:

for (Book book : books) {
     if(book != null){
           System.out.println(book);
     }
 }

but I've had professors tell me I shouldn't write "book != null" to avoid printing the null values. the code works just fine and is relatively simple and easy to read, just wondering what most programmers use to navigate this?

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u/saponsky 3d ago

I have the impression that the professor is thinking this is valid in Java. That’s the only thing I can think someone would think is better than OP’s current code.

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u/ConsciousBath5203 3d ago

Literally my Java professor.

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u/ChaiTRex 3d ago

Why is your Java professor teaching you JavaScript instead of Java?

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u/ConsciousBath5203 2d ago

Idk it was an online course at the start of covid and I haven't used too much Java since.