import org.jetbrains.annotations.NotNull; import java.io.ByteArrayOutputStream; public class Test { public static void main(String[] args) { byte[] result = test(); System.out.println(result.length); } @NotNull private static byte[] test() { ByteArrayOutputStream buffer = new ByteArrayOutputStream(); for (int c = 0; c != 100000; c++) { buffer.write(0); } return buffer.toByteArray(); } }