arrays Archives - Page 51 of 55

Are arrays passed by value or passed by reference in Java?

Your question is based on a false premise. Arrays are not a primitive type in Java, but they are not objects either … ...

April 6, 2022
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How can I check whether an array is null / empty?

There’s a key difference between a null array and an empty array. This is a test for null. int arr...

April 6, 2022
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Shifting array to the right – homework

You can do something like: public static void shiftRight( char letters ) { char last = letters...

April 6, 2022
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Add an object to an Array of a custom class

April 6, 2022
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Random shuffling of an array

Using Collections to shuffle an array of primitive types is a bit of an overkill… It is simple enough to implement the function ...

April 6, 2022
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How to convert int[] to Integer[] in Java?

I’m new to Java and very confused. I have a large dataset of length 4 int and I want to count the number of times ...

April 6, 2022
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Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException

I am a beginner to programming. I’m a few weeks into my first programming class, so please bear with me. I am not ...

April 6, 2022
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The method works if you provide an array. The output of String helloWorld = {"Hello", "World"}; System.out.println(helloWorld); System.out.println(Arrays.toString(helloWorld)); is [Ljava.lang.String;@45a877...

April 6, 2022
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“Cannot create generic array of ..” – how to create an Array of Map?

Because of how generics in Java work, you cannot directly create an array of a generic type (such as Map<String, Object>...

April 6, 2022
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Convert String to int array in java

April 6, 2022
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