十进制转换为十六进制-蒲公英云

十进制转换为十六进制

迷南。 2022-09-26 02:58 260阅读 0赞

package Chapter05;
import java.util.*;
//import java.util.Scanner;
import javax.swing.JOptionPane;
public class chapter05_example01 {
    public static void main(String[] args) {
        // 测试
        int tt = 9, yy = 11;
        test01(tt);
        test01(yy);
        // 十进制转换为十六进制
        Scanner input = new Scanner(System.in);
        System.out.println("Please input a number:");
        int decimal = input.nextInt();
        System.out.println(decimalToHex(decimal));
        input.close();
        String input2 = JOptionPane.showInputDialog(null, "输入Decimal data", "标题", JOptionPane.QUESTION_MESSAGE);
        int decimal2 = Integer.parseInt(input2);
        String jieguo2 = "decimal  " + decimal2 + "\nHex  " + decimalToHex(decimal2);
        JOptionPane.showMessageDialog(null, jieguo2, "结果", JOptionPane.INFORMATION_MESSAGE);
    }
    public static void test01(int xx) {
        if (xx > 10)
            return;
        else
            System.out.println("小于10");
    }
    public static String decimalToHex(int decimal) {
        // 将一个十进制数转换为十六进制数
        String hex = "";
        while (decimal != 0) {
            int hexvalue = decimal % 16;
            hex = toHexChar(hexvalue) + hex;
            decimal = decimal / 16;
        }
        return hex;
    }
    public static char toHexChar(int HexValue) {
        if (HexValue <= 9 && HexValue >= 0)
            return (char) (HexValue + '0');
        else
            return (char) (HexValue - 10 + 'A');
    }
}