This example shares the implementation code for Java generating 6-bit random strings. The specific content is as follows
package com.amos.tools; import java.util.ArrayList;import java.util.List;import java.util.Random; public class InvertCodeGenerator { public static void main(String[] args) { // TODO Auto-generated method stub List<String> results=genCodes(6,100); System.out.println(results.size()); } public static List<String> genCodes(int length,long num){ List<String> results=new ArrayList<String>(); for(int j=0;j<num;j++){ String val = ""; Random random = new Random(); for(int i = 0; i < length; i++) { String charOrNum = random.nextInt(2) % 2 == 0 ? "char" : "num"; // Output letter or number if("char".equalsIgnoreCase(charOrNum)) // String { int choice = random.nextInt(2) % 2 == 0 ? 65 : 97; //Get the uppercase or lowercase letter val += (char) (choice + random.nextInt(26)); } else if("num".equalsIgnoreCase(charOrNum)) // Number { val += String.valueOf(random.nextInt(10)); } } val=val.toLowerCase(); if(results.contains(val)){ continue; }else{ results.add(val); } } return results; } } } }The above is all about this article, I hope it will be helpful for everyone to learn Java programming.