NegativeArraySizeException when constructing large (>1GB) string in Java9+

NASE.java

package org.example;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

// In Java8: java.lang.OutOfMemoryError: Java heap space
// In Java9+: java.lang.NegativeArraySizeException: -1894967266
public class Main {

  static byte[] generateData() {
    int asciisize = 1_200_000_000;
    byte[] nonAscii = "非アスキー".getBytes();
    int nonAsciiSize = nonAscii.length;
    // 1 GB
    byte[] arr = new byte[asciisize + nonAsciiSize];
    for (int i=0; i<asciisize; ++i) {
      arr[i] = (byte)('0' + (i % 40));
    }
    for(int i=0; i<nonAsciiSize; ++i) {
      arr[i + asciisize] = nonAscii[i];
    }
    return arr;
  }


  public static void main(String[] args) throws IOException {
    byte[] largeBytes = generateData();
    String inStr = new String(largeBytes, StandardCharsets.UTF_8);
    System.out.println(inStr.length());
    System.out.println(inStr.substring(1_200_000_000));
  }
}