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How to find java app hosting(ISP) or How to deploy Spring Boot website to Koyeb

How to find java app hosting(ISP) or How to deploy Spring Boot website to Koyeb

Spring boot is the most famous java framework, and I have been looking for a simple way to serve a java app on a hosting service(not dedicated which is very expensive not AWS/Azure which are too complicated), Most shared hosting does not support java

Jan 04, 2025 am 04:18 AM
When Should I Use `repaint()` and `revalidate()` in Java Swing?

When Should I Use `repaint()` and `revalidate()` in Java Swing?

Understanding revalidate() and repaint() in Java SwingIn Swing applications, managing the visual appearance of components is crucial to provide a...

Jan 04, 2025 am 03:48 AM
Why Must `this()` or `super()` Be the First Statement in a Java Constructor?

Why Must `this()` or `super()` Be the First Statement in a Java Constructor?

Why Must this() and super() Be the First Statements in a Constructor?Java mandates that if a constructor calls this() or super(), these calls must...

Jan 04, 2025 am 03:29 AM
Create Class and Object

Create Class and Object

1. How Object is created in Java? The object is a basic building block of an OOPs language. In Java, we cannot execute any program without creating an object. Java provides five ways to create an object. -Using new Keyword -Using clone(

Jan 04, 2025 am 03:21 AM
How to Reliably Check for Non-Null and Non-Empty Strings in Java?

How to Reliably Check for Non-Null and Non-Empty Strings in Java?

Assessing Non-Null and Non-Empty StringsIn programming, ensuring the validity of string inputs is crucial. A common task involves verifying...

Jan 04, 2025 am 03:02 AM
How Can I Increase Java Stack Size and Determine the Optimal Size to Avoid StackOverflowError?

How Can I Increase Java Stack Size and Determine the Optimal Size to Avoid StackOverflowError?

Understanding Java Stack SizeIn Java, encountering a StackOverflowError can be an indication that the runtime call stack size is too small for a...

Jan 04, 2025 am 02:59 AM
Range sum query - Immutable

Range sum query - Immutable

Problem TC: O(n*m) for creating the prefix[][] sum matrix, O(row1 row2) for calculating the sum of the given rectangle SC: O(n*m) for using the prefix[][] sum matrix class NumMatrix { int prefix[][]; public NumMatrix(int[][] matrix) {

Jan 04, 2025 am 02:24 AM
Swing GUI Positioning: Centering or Platform Default—Which is Better?

Swing GUI Positioning: Centering or Platform Default—Which is Better?

Positioning Swing GUIs: Centering vs. Platform LocationWhen positioning Swing GUIs, there are two common approaches: centering the GUI or using...

Jan 04, 2025 am 02:19 AM
How Can I Connect and Use SQLite Databases with Java?

How Can I Connect and Use SQLite Databases with Java?

Java and SQLite: A Guide to Connecting and UsingIn the pursuit of a more efficient and compact database solution, SQLite has emerged as a popular...

Jan 04, 2025 am 12:56 AM
Why Does `SimpleDateFormat` Return 2012 for 'Y' and 2011 for 'y'?

Why Does `SimpleDateFormat` Return 2012 for 'Y' and 2011 for 'y'?

Why 'Y' Returns 2012 While 'y' Returns 2011 in SimpleDateFormatIn the SimpleDateFormat class, 'Y' and 'y' represent different concepts in the...

Jan 04, 2025 am 12:02 AM
How Does Java's HashMap Handle Hash Code Collisions?

How Does Java's HashMap Handle Hash Code Collisions?

Collision Handling in Java HashMap: Resolving Hash Code SharingUnderstanding the behavior of Java HashMap is crucial for efficient data...

Jan 03, 2025 pm 11:59 PM
Why Does Gson Throw 'Expected BEGIN_OBJECT but was STRING' and How Can I Fix It?

Why Does Gson Throw 'Expected BEGIN_OBJECT but was STRING' and How Can I Fix It?

"Expected BEGIN_OBJECT but was STRING" Error in Gson ParsingWhen attempting to parse JSON data using Gson, you may encounter the error message...

Jan 03, 2025 pm 10:54 PM
How Can I Create a Custom-Shaped Button in Java Without Extending JButton?

How Can I Create a Custom-Shaped Button in Java Without Extending JButton?

Creating a Custom Button in Java with JButtonWhen creating custom buttons in Java, you can utilize the JButton class and extend it to achieve your...

Jan 03, 2025 pm 09:38 PM
A Comprehensive Guide to Mastering Kotlin Coroutines

A Comprehensive Guide to Mastering Kotlin Coroutines

Introduction Coroutines simplify asynchronous programming by making it more readable and efficient. Think of threads as individual cars on a highway, each taking up space and resources. In contrast, coroutines are like carpooling - multiple tas

Jan 03, 2025 pm 09:26 PM

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