Java 17 随机数生成器来了一波稳稳的增强

var random = new Random(System.currentTimeMillis());
for (int i = 0; i < 10; i++) {
    System.out.println(random.nextInt());
}

SplittableRandom splittableRandom = ...;
Random random = ...;

boolean useSplittableRandom = false;

...
    
if (useSplittableRandom) {
   nextInt = splittableRandom.nextInt();
} else {
    nextInt = random.nextInt();
}

// Random.java
public DoubleStream doubles() {
    return StreamSupport.doubleStream
        (new RandomDoublesSpliterator
         (this, 0L, Long.MAX_VALUE, Double.MAX_VALUE, 0.0),
         false);
}

// SplittableRandom.java
public DoubleStream doubles(long streamSize, double randomNumberOrigin,
                            double randomNumberBound) {
    if (streamSize < 0L)
        throw new IllegalArgumentException(BAD_SIZE);
    if (!(randomNumberOrigin < randomNumberBound))
        throw new IllegalArgumentException(BAD_RANGE);
    return StreamSupport.doubleStream
        (new RandomDoublesSpliterator
         (this, 0L, streamSize, randomNumberOrigin, randomNumberBound),
         false);
}

// Random.java
public DoubleStream doubles() {
    return AbstractSpliteratorGenerator.doubles(this);
}

//SplittableRandom.java
private AbstractSplittableGeneratorProxy proxy;
...
public DoubleStream doubles() {
    return proxy.doubles();
}
...
private class AbstractSplittableGeneratorProxy extends AbstractSplittableGenerator {
    @Override
    public int nextInt() {
        return SplittableRandom.this.nextInt();
    }

    @Override
    public long nextLong() {
        return SplittableRandom.this.nextLong();
    }

    @Override
    public java.util.SplittableRandom split(SplittableGenerator source) {
        return new SplittableRandom(source.nextLong(), mixGamma(source.nextLong()));
    }
}

@RandomGeneratorProperties(
        name = "L32X64MixRandom",
        group = "LXM",
        i = 64, j = 1, k = 32,
        equidistribution = 1
)
public final class L32X64MixRandom extends AbstractSplittableWithBrineGenerator { ... }

var random = RandomGenerator.of("L32X64MixRandom");
for (int i = 0; i < 10; i++) {
    System.out.println(random.nextInt());
}