java 8 random string generator
@Test public void givenUsingJava8_whenGeneratingRandomAlphanumericString_thenCorrect() { int leftLimit = 48; // numeral '0' int rightLimit = 122; // letter 'z' int targetStringLength = 10; Random random = new Random(); String generatedString = random.ints(leftLimit, rightLimit + 1) .filter(i -> (i <= 57 || i >= 65) && (i <= 90 || i >= 97)) .limit(targetStringLength) .collect(StringBuilder::new, StringBuilder::appendCodePoint, StringBuilder::append) .toString(); System.out.println(generatedString); }