public class TestClass{ public static void main(String[] args) { StringBuilder sBuilder = new StringBuilder(); for (int i = 0; i < 1000; i++) { sBuilder.append("Add This"); } String str = sBuilder.toString(); } } Conclusion String is immutable in Java to ensure thread safety, ...
publicclassMainTest{publicstaticvoidmain(String[] args) {ConcurrentSkipListMap<Integer,String> skipListMap =newConcurrentSkipListMap<>(); skipListMap.put(3,"3"); skipListMap.put(6,"6"); skipListMap.put(7,"7"); skipListMap.put(9,"9"); skipListMap.put(12,"12"); skipListMap.put(17,"1...
Thiscomes at the cost of an additional resource footprint and learning curve, however small that may be. If there is really an application which is simple enough and not expected to grow complex, perhaps it may benefit more to not use any framework at all! 8. Conclusion In this article, ...
On x86, any lock-prefixed instruction can be used as a StoreLoad barrier. (The form used in linux kernels is the no-op lock; addl $0,0(%%esp).) Versions supporting the "SSE2" extensions (Pentium4 and later) support the mfence instruction which seems preferable unless a lock-prefixed ...
import java.util.Vector; public class MemoryConsumer { private static float CAP = 0.8f; // 80% private static int ONE_MB = 1024 * 1024; private static Vector cache = new Vector(); public static void main(String[] args) { Runtime rt = Runtime.getRuntime(); ...
public static void main(String[] args) { try { List<String> inputArguments = ManagementFactory.getRuntimeMXBean().getInputArguments(); System.out.println("Running with: " + inputArguments); while (true) { printMaxMemory(); consumeSpace(); } } catch (OutOfMemoryError e) { freeSpace();...
The lie that it is more performant than Java or C# I love this argument because depending on what you want to prove, you can have a different result. I’ve done myself two benchmarks when comparing Go to Java. In one of those tests, Java was about 10% faster because the JIT did ...
Linked 1595 How to split a string in Java Related 6409 Is Java “pass-by-reference” or “pass-by-value”? 3520 Create ArrayList from array 3891 How do I check if an array includes a value in JavaScript? 1894 What’s the simplest way to print a Java array? 2235 How do I determine...
I really don’t get the “harder to learn” argument that is being used so often to stop changes. If someone is a half-decent programmer, they should be able to grasp the concept of, say, closures; and at least be able to use them. If not, maybe a career change is in order. By...
public static void main( String[] args ) throws IOException { try( BufferedReader bufferedReader = new BufferedReader( new /*InputStream*/FileReader( args[0] /*System.in*/ ) ); ) { int n = Integer.parseInt( bufferedReader.readLine().trim() ); List<Integer> arr = Stream .of( buffere...