Javaタイプ変換:char回転int

Javaタイプ変換:char回転int
ソースコード

package com.onlydemo.javalang;
 
/**
 *     : char int
 * 
 * 1.char-'0'  char int
 * 2.Character.getNumericValue(char ch)  char int
 * 
 * @author www.only-demo.com
 *
 */
class CharToIntDemo {
    public static void main(String args[]) {
        char c = '3';
        //1.char - '0'
        int i = c - '0';
        System.out.println("c = " + c);
        System.out.println("i = " + i);
         
        //2.Character.getNumericValue(char ch)  char int
        int i2 = Character.getNumericValue(c);
        System.out.println("i2 = " + i2);
    }
}

結果

c = 3
i = 3
i2 = 3

原文住所:http://www.only-demo.com/java/20190220/277.html