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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)]);
}
}
}
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