Hobbyist questions

• Java Optional<T> questions, am I doing this right?
• Local storage with HTML5 | Javascript
• Cutting off the nasty edge of a circular blurred image
• Is it possible to "synchronized if" statement?
• X is not associated to Y
• iOS Image View - Height equal to the size of width
• Spread operator vs JSON.parse(JSON.stringify(...)) for immutable objects
• Retrieving current capslock state in Java [duplicate]
• Handling different exceptions of the same type in Java?
• UIButton#titleLabel reverts after being changed programmatically

Hobbyist answers