Example of Java method to implement statistics on the number of characters and substrings in strings

This article describes the method of java to implement statistics on the number of characters and substrings in strings. Share it for your reference, as follows:

Here, Java is used to count the number of characters (including numbers, uppercase letters, lowercase letters and other characters) in a string, as well as the number of substrings of the string.

The operation renderings are as follows:

The specific code is as follows:

 import java.util.Scanner;public class Counter { static Scanner scanner = new Scanner(System.in); public static void count(String s) { int low, upper, num, others; low = upper = num = others = 0; for (int i = 0; i < s.length(); i++) { if (Character.isDigit(s.charAt(i))) { num++; continue; } if (Character.isLowerCase(s.charAt(i))) { low++; continue; } if (Character.isUpperCase(s.charAt(i))) { upper++; continue; } else { others++; } } System.out.println(" The number of uppercase letters is: " + upper + "/n The number of lowercase letters is: " + low+ "/n The number of numbers is: " + num + "/n The number of other characters is: " + others); } public static void subCounter(String str1, String str2) { int counter = 0; for (int i = 0; i <= str1.length() - str2.length(); i++) { if (str1.substring(i, i + str2.length()).equalsIgnoreCase(str2)) { counter++; } } System.out.println("The number of substrings is: " + counter); } public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("Please enter a string:"); String string = scanner.nextLine(); count(string); System.out.println("------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Query how many substrings str exist in this string. System.out.println("Please enter a substring you want to query:"); String str = scanner.nextLine(); subCounter(string, str); }}

PS: Here are a few online character statistics tools for your reference:

Online word count tool:
http://tools.VeVB.COM/code/zishutongji

Online character statistics and editing tools:
http://tools.VeVB.COM/code/char_tongji

I hope this article will be helpful to everyone's Java programming.