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Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2

By adminPosted on November 27, 2023

Problem : I’m getting below error. Failed to parse JSON due to: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at […]

Extract digits from a string in Java

By adminPosted on November 21, 2023

Problem : I have a Java String object. I need to extract only digits from it. I’ll give an example: […]

JPQL Create new Object In Select Statement – avoid or embrace?

By adminPosted on November 13, 2023

Problem : I’ve learnt recently that it is possible to create new Objects in JPQL statements as follows: select new […]

JavaFX 11: IllegalAccessError when creating Label

By adminPosted on November 8, 2023

Problem : This question is likely about the same issue as this one, but it appears the asker of that […]

JUnit: How to simulate System.in testing?

By adminPosted on November 7, 2023

Problem : I have a Java command-line program. I would like to create JUnit test case to be able to […]

Calculating distance between two points, using latitude longitude?

By adminPosted on November 3, 2023

Problem : Here’s my try, it’s just a snippet of my code: final double RADIUS = 6371.01; double temp = […]

How can I make Java print quotes, like “Hello”?

By adminPosted on November 2, 2023

Problem : How can I make Java print “Hello”? When I type System.out.print(“Hello”); the output will be Hello. What I […]

how to read System environment variable in Spring applicationContext

By adminPosted on November 1, 2023

Problem : How to read the system environment variable in the application context? I want something like : <util:properties id=”dbProperties” […]

Handling MySQL datetimes and timestamps in Java

By adminPosted on October 30, 2023

Problem : In a java application what would a good compromise in terms of extracing and inputting date information with […]

How to terminate Scanner when input is complete?

By adminPosted on October 27, 2023

Problem : public static void main(String[] args) { Scanner scan = new Scanner(System.in); try { while (scan.hasNextLine()){ String line = […]

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