Veselin Davidov questions

Veselin Davidov answers

• How to get current hour in milliseconds format in java?
• Unable to fetch numbers from string by java split() method
• How to JSON ignore only when an entity is referenced?
• Exceptions or null in java
• How to zip files and folders in Java?
• Binary Tree Recursive InOrder method confusion
• Convert ArrayList<String> to byte[]
• Share an object (blockchain) on a network
• how to prevent division by zero without handling exception java
• Get exit code of a command