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Java Program to get random letters
To generate random letters, set letters as a strong and use the toCharArray() to convert it into character array −
"abcdefghijklmnopqrstuvwxyz".toCharArray()
Now, use the nextInt() to generate random letters from it −
System.out.println("" + "abcdefghijklmnopqrstuvwxyz".toCharArray()[randNum.nextInt("abcdefghijklmnopqrstuvwxyz".toCharArray().length)]);Above, initially we have created a Random object −
static Random randNum = new Random();
Example
import java.util.Random;
public class Demo {
static Random randNum = new Random();
public static void main(String args[]) {
System.out.println("Lowercase random letters...");
for (int i = 0; i < 5; i++) {
System.out.println("" + "abcdefghijklmnopqrstuvwxyz".toCharArray()[randNum.nextInt("abcdefghijklmnopqrstuvwxyz".toCharArray().length)]);
}
System.out.println("Uppercase random letters...");
for (int i = 0; i < 5; i++) {
System.out.println("" + "ABCDEFGHIJKLMNOPQRSTUVWZYZ".toCharArray()[randNum.nextInt("ABCDEFGHIJKLMNOPQRSTUVWZYZ".toCharArray().length)]);
}
}
}Output
Lowercase random letters... d l h j s Uppercase random letters... B K I Z N
Updated on: 30-Jul-2019
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