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So konvertieren Sie ein Zeichen in Java in ASCII

So konvertieren Sie Zeichen in ASCII in Java

In Java ist die Konvertierung des Zeichens in ASCII recht einfach. Es wird lediglich das Zeichen in int konvertiert.

Zeichen in ASCII konvertieren 

int ascii = (int) character;

Konvertiert ASCII in Zeichen 

char character = (char)ascii;

Beispiel in Java 

package com.example.common;
/**
 * Character Utility class
 * @author example
 *
 */
public class CharUtils
{
    /**
     * Convert the characters to ASCII value
     * @param character character
     * @return ASCII value
     */
    public static int CharToASCII(final char character){
        return (int)character;
    }

    /**
     * Convert the ASCII value to character
     * @param ascii ascii value
     * @return character value
     */
    public static char ASCIIToChar(final int ascii){
        return (char)ascii;
    }
}

Gerätetest 

package com.example.common;
import org.testng.Assert;
import org.testng.annotations.*;
/**
 * Character Utils Testing
 * @author example
 *
 */
public class CharUtilsTest {

    @DataProvider
    public Object[][] ValidDataProvider() {
        return new Object[][]{
                { 'A', 65 },{ 'a', 97 },
                { 'B', 66 },{ 'b', 98 },
                { 'C', 67 },{ 'c', 99 },
                { 'D', 68 },{ 'd', 100 },
                { 'Z', 90 },{ 'z', 122 },
                { '1', 49 },{ '9', 57 },

        };
    }

    @Test(dataProvider = "ValidDataProvider")
    public void CharToASCIITest(final char character, final int ascii) {
           int result = CharUtils.CharToASCII(character);
           Assert.assertEquals(result, ascii);
    }

    @Test(dataProvider = "ValidDataProvider")
    public void ASCIIToCharTest(final char character, final int ascii) {
           char result = CharUtils.ASCIIToChar(ascii);
           Assert.assertEquals(result, character);
    }
}

Unit-Testergebnis 

PASSED: CharToASCIITest(A, 65)
PASSED: CharToASCIITest(a, 97)
PASSED: CharToASCIITest(B, 66)
PASSED: CharToASCIITest(b, 98)
PASSED: CharToASCIITest(C, 67)
PASSED: CharToASCIITest(c, 99)
PASSED: CharToASCIITest(D, 68)
PASSED: CharToASCIITest(d, 100)
PASSED: CharToASCIITest(Z, 90)
PASSED: CharToASCIITest(z, 122)
PASSED: CharToASCIITest(1, 49)
PASSED: CharToASCIITest(9, 57)
PASSED: ASCIIToCharTest(A, 65)
PASSED: ASCIIToCharTest(a, 97)
PASSED: ASCIIToCharTest(B, 66)
PASSED: ASCIIToCharTest(b, 98)
PASSED: ASCIIToCharTest(C, 67)
PASSED: ASCIIToCharTest(c, 99)
PASSED: ASCIIToCharTest(D, 68)
PASSED: ASCIIToCharTest(d, 100)
PASSED: ASCIIToCharTest(Z, 90)
PASSED: ASCIIToCharTest(z, 122)
PASSED: ASCIIToCharTest(1, 49)
PASSED: ASCIIToCharTest(9, 57)

===============================================
    com.example.common.CharUtilsTest
    Tests run: 24, Failures: 0, Skips: 0
===============================================


===============================================
example
Total tests run: 24, Failures: 0, Skips: 0
===============================================

Referenz

http://www.asciitable.com/

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