babanin

    Integer x = 127;

    System.out.println(x);                  // 1
    System.out.println(127);                // 2
    System.out.println((Integer) 127);      // 3
    System.out.println(new Integer(127));   // 4

babanin

         static {
            // high value may be configured by property
            int h = 127;
            String integerCacheHighPropValue =
                sun.misc.VM.getSavedProperty("java.lang.Integer.IntegerCache.high");
            if (integerCacheHighPropValue != null) {
                int i = parseInt(integerCacheHighPropValue);
                i = Math.max(i, 127);
                // Maximum array size is Integer.MAX_VALUE
                h = Math.min(i, Integer.MAX_VALUE - (-low) -1);

babanin

import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.RecursiveTask;

/**
 * @author Ivan Babanin ([email protected])
 */
public class TestFJP {
  public static void main(String[] args) throws InterruptedException {
    ForkJoinPool forkJoinPool = new ForkJoinPool(1);
    forkJoinPool.submit(new Task(0));

babanin

import java.nio.ByteBuffer;

/**
 * @author Ivan Babanin ([email protected])
 */
public class StoreFloatsInDouble {
  public static void main(String[] args) {
    double pack = pack(1.1f, 1.2f);
    float[] unpack = unpack(pack);
    System.out.println(unpack[0] + "\n" + unpack[1]);