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Rakstzīmju klase parasti iesaiņo visu primitīvā tipa char vērtību objektā. Jebkurš objekta tipa Character var saturēt vienu lauku, kura tips ir char.

Visi klases Character lauki, metodes un konstruktori ir norādīti Unicode datu failā, kas ir īpaši daļa no Unicode rakstzīmju datu bāzes un ko uztur Unicode konsorcijs.

Rakstzīmju kopa no U+0000 līdz U+FFFF dažkārt tiek saukta par pamata daudzvalodu plakni (t.i., BMP). Rakstzīmes, kuru koda punkti ir lielāki par U+FFFF, sauc par papildu rakstzīmēm. Java valoda parasti izmanto UTF-16 kodēšanas metodi, lai attēlotu rakstzīmju masīvus virknē vai virknes buferī. Šāda veida attēlojumā papildu rakstzīmes tiek attēlotas kā rakstzīmju pāris, no kuriem pirmā ir no augstākā surogātdiapazona (uD800-uDBFF) un otrā, kas ir no zemā aizstājēja diapazona (uDc00- uDBFF).

Metodes

1. piemērs

 import java.util.Scanner; public class JavaCharacterExample1 { public static void main(String[] args) { // Ask the user for the first input. System.out.print('Enter the first input:'); // Use the Scanner class to get the user input. Scanner scanner = new Scanner(System.in); // Gets the user input. char[] value1 = scanner.nextLine().toCharArray(); int result1 = 0; // Count the characters for a specific character. for (char ch1 : value1) { result1 = Character.charCount(ch1); } // Print the result. System.out.print('The value comes to: '+result1+'
'); System.out.print('Enter the second input:'); char[] value2 = scanner.nextLine().toCharArray(); for (char ch2 : value2) { int result2 = Character.hashCode(ch2); System.out.print('The hash code for the character ''+ch2+'' is given as:'+result2+'
'); } System.out.print('Enter the third input:'); char[] value3 = scanner.nextLine().toCharArray(); for (char ch3 : value3) { boolean result3 = Character.isDigit(ch3); if(result3){ System.out.println('The character '' + ch3 + '' is a digit. '); } else{ System.out.println('The character '' + ch3 + '' is not a digit.'); } System.out.print('Enter the fourth input:'); char[] value4 = scanner.nextLine().toCharArray(); for (char ch4 : value4) { boolean result4 = Character.isISOControl(ch4); System.out.println('The fourth character ''+ch4+'' is an ISO Control:'+result4); } } } } 

Izvade:

 Enter the first input:89 The value comes to: 1 Enter the second input:J The hash code for the character 'J' is given as:74 Enter the third input:5 The character '5' is a digit. Enter the fourth input:h The fourth character 'h' is an ISO Control:false 

2. piemērs

 public class JavaCharacterExample2{ public static void main(String[] args) { // Create four char primitives ch1, ch2, ch3 and ch4. char ch1, ch2, ch3, ch4; // Assign the values to ch1, ch2, ch3 and ch4. ch1 = 'T'; ch2 = 'k'; ch3 = '
'; ch4 = 'G'; // Create four boolean primitives b1, b2, b3 and b4. boolean b1, b2, b3,b4; // Assign the results to b1, b2, b3 and b4. b1 = Character.isLetter(ch1); b2 = Character.isLowerCase(ch2); b3 = Character.isSpace(ch3); b4 = Character.isDefined(ch3); String str1 = ' The first character is a letter: ' + b1; String str2 = ' The second character is a lower-case: ' + b2; String str3 = ' The third character is for space: ' + b3; String str4 = ' The fourth character is defined in Java identifier: ' + b3; // Print the values of b1, b2, b3 and b4. System.out.println( str1 ); System.out.println( str2 ); System.out.println( str3 ); System.out.println( str3 ); } } 

Izvade:

 The first character is a letter: true The second character is a lower-case: true The third character has a space: true The third character has a space: true