random string generator java
public static String getRandomString(int size) {
// The string that we will return
String rand = "";
// The chars that are used to generate the random string
String chars = "1234567890-=!@#$%^&*()_+qwertyuiop[]\\QWERTYUIOP{}|asdfghjkl;'ASDFGHJKL:\"zxcvbnm,./ZXCVBNM<>?";
// Loop based on the requested size
for (int i = 0; i < size; i++) {
// Add a random char from the chars string to the rand string
rand += chars.toCharArray()[new Random().nextInt(chars.length())];
}
// Return the random string
return rand;
}
4.33
9
@Test
public void givenUsingJava8_whenGeneratingRandomAlphanumericString_thenCorrect() {
int leftLimit = 48; // numeral '0'
int rightLimit = 122; // letter 'z'
int targetStringLength = 10;
Random random = new Random();
String generatedString = random.ints(leftLimit, rightLimit + 1)
.filter(i -> (i <= 57 || i >= 65) && (i <= 90 || i >= 97))
.limit(targetStringLength)
.collect(StringBuilder::new, StringBuilder::appendCodePoint, StringBuilder::append)
.toString();
System.out.println(generatedString);
}
Thank you!
9
0
3.86
7
RandomStringUtils.randomAlphanumeric(17).toUpperCase()
Thank you!
7
0
3.75
4
import java.util.Random;
public class Generator {
public static String generateRandomPassword(int len) {
String chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijk"
+"lmnopqrstuvwxyz!@#$%&";
Random rnd = new Random();
StringBuilder sb = new StringBuilder(len);
for (int i = 0; i < len; i++)
sb.append(chars.charAt(rnd.nextInt(chars.length())));
return sb.toString();
}
}
Thank you!
4
0
Are there any code examples left?
New code examples in category Java
-
Java 2022-03-27 21:35:04 Sort string array in case insensitive order and case sensitive order java
-
Java 2022-03-27 21:25:10 java -jar -l resources\es.porperties -i ejemplo.txt -o inject.bin
-
Java 2022-03-27 21:20:21 Debug & Fix a 2-Dimensional Array Java Console Application
-
Java 2022-03-27 20:40:19 TreeSet headSet(E toElement) method in java
-
Java 2022-03-27 19:30:06 close keyboard android
-
Java 2022-03-27 19:20:40 java measure execution time
-
Java 2022-03-27 19:10:06 how to add cardview support in android studio
-
Java 2022-03-27 18:55:08 android studio lower case letters on a button