publicstaticvoidmain(String[]args){// 定义字符范围charminChar='A';charmaxChar='Z';// 测试字符chartestChar='G';// 假设我们要测试的字符是 'G'// 检查字符是否在范围并输出结果booleanresult=isCharacterInRange(testChar,minChar,maxChar);System.out.println("字符 '"+testChar+"' 是否在范围内: ...
public sealed interface CharacterRange extends PseudoInstructionPREVIEWCharacterRange is a preview API of the Java platform. Programs can only use CharacterRange when preview features are enabled. Preview features may be removed in a future release, or upgraded to permanent features of the Java ...
java.util.regex.PatternSyntaxException 是Java 中用于指示正则表达式模式字符串中存在语法错误时抛出的异常。这个异常表明你提供的正则表达式模式在语法上是不正确的,因此无法被编译成 Pattern 对象。 illegal character range near index 1 错误信息的具体意义 当你看到错误信息 illegal character range near index 1 时...
The Java platform uses the UTF-16 representation in char arrays and in the String and StringBuffer classes. In this representation, supplementary characters are represented as a pair of char values, the first from the high-surrogates range, (\uD800-\uDBFF), the second from the low-surrogates...
import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexMatch { public static void main(String[] args) { // "NOT MATCH" because @ is not in range of a to z System.out.println((MatchCustomRegex("@", "[a-z]") ? ("MATCH") : ("NOT MATCH"))); // "...
/* Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 20 */ } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 在上面的代码中,我们传入了一个索引 20:这超过了变量中的字符数 - 所以我们得到了一个错误。您可以在上面的代码块中看到注释掉的...
In the Java SE API documentation, Unicode code point is used for character values in the range between U+0000 and U+10FFFF, and Unicode code unit is used for 16-bit char values that are code units of the UTF-16 encoding. For more information on Unicode terminology, refer to the Unicode...
- This is a modal window. No compatible source was found for this media. packagecom.tutorialspoint;publicclassCharacterDemo{publicstaticvoidmain(String[]args){intcp=0x1234;intres;res=Character.charCount(cp);System.out.println(res);}} Output ...
Character range 1: a b c d e f g Character range 2: g h i j k l m n o p Example 2: funmain(args : Array<String>){// creating character rangesprintln("Character range 1:")for(xin'a'..'g'step3){ println(x) } println() println("Character range 2:")for(xin'g'..'p'st...
Recall that character classes are the 'choices' to match against a single character that we put in square brackets. For example, to match any digit, we have been using [0-9]. We've always "spelled out" the characters or range of characters in this way. ...