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I’m a Java backend developer working with Spring Boot and microservices. If you’re building something and need help with backend logic, APIs, or data persistence, feel free to DM.
If anyone has Java backend programming work, I can do it for them for free.
If anyone has Java backend programming work, I can do it for them for free.
Hello dear friends, I wanted to let you know that if you're working on Java projects or dealing with database challenges,I'm here to help. Feel free to send me your specific issues - I'll do my best to find solutions or simpler approaches for you Looking forward to collaborating
چرا موقع استفاده از testContainers همیشه از اول ساخته میشه و در نتیجه با کندی مواجه می شویم ؟
💡 Concurrent Chaos List<Integer> list = new ArrayList<>(List.of(1,2,3)); for(Integer i : list) list.remove(i); // ConcurrentModificationException 😱
🔥 StringBuilder vs += Madness String s = ""; for(int i=0;i<1000;i++) s += i; // Slow & memory heavy 💡 Use StringBuilder for big loops!
💥 Null Pointer Surprise 💥 String s = null; System.out.println(s.length()); // Boom! 😱 NullPointerException
💥 Java “Surprise” Bug 💥 ``` List<Integer> list = new ArrayList<>(); list.add(1); list.add(2); list.add(3); for (Integer i : list) { list.remove(i); // Boom! 😱 } ``` Result? ConcurrentModificationException! Why? You can’t modify a list while looping over it.
💡 Java Tip: Stop using += in loops! Strings are immutable → each += creates a new object. ✅ Use StringBuilder for loops: faster & memory-friendly! #Java #CodingTips #Performance
حلقههای for با var for (var item : items) { System.out.println(item); }
توابع چندخطی با Lambda (جاوا 11+) Function<String, String> processor = s -> { String trimmed = s.trim(); return trimmed.isEmpty() ? "خالی" : trimmed; };
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