java语言 String 中的方法length()计算的是调用该方法的字符串的实际字数,比如:"中文".length(); 这里获取的长度是2,"english".length(); 这里获取的长度是7,所以这个方法计算的并非是字节长度,而是字符串的实际字数,如果是技术字节长度的话,"中文".length();的结果应该是4,"english".length();就没得说了,...
下面是计算字符长度的代码: publicintgetChineseCharLength(Stringstr){intlength=0;char[]chars=str.toCharArray();for(charc:chars){if(isChineseChar(c)){length+=2;}elseif(isEnglishChar(c)){length+=1;}}returnlength;} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 以上代码中,getChineseCha...
private static String getTitleToTen(String s, int length) throws Exception { String title = ""; s = s.trim(); byte[] bytes = s.getBytes("Unicode"); int n = 0; int i = 2; int chineseNum = 0; int englishNum = 0; for (; i < bytes.length && n < length; i++){ if (i...
publicclassEnglishStringValidator{publicstaticbooleanisEnglishString(Stringinput){for(inti=0;i
JDK 1.1 以降では、これを行うには、Charset (文字セットの名前) を取る、またはプラットフォームのデフォルト文字セットを使用する String コンストラクタの使用が推奨されます。 String(byte[] bytes, int offset, int length, String charsetName) 指定された文字セットを使用して、指定され...
一、StringUtils常用的静态方法 1. public static boolean isEmpty(String str) 判断某字符串是否为空,为空的标准是 str==null 或 str.length()==0 下面是示例: StringUtils.isEmpty(null) = tru
public class Homework3 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println(“请输入字符串:”); String character = sc.nextLine(); char[] arr=character.toCharArray(); for (int i = 0; i < arr.length; i++) { if ((int)arr[i] >=...
6 */7publicclassBook{8privateString id;9privateString name;10privateString author;11privateString year;12privateString price;13privateString language;14publicStringgetId(){15returnid;16}17publicvoidsetId(String id){18this.id=id;19}20publicStringgetName(){21returnname;22}23publicvoidsetName(Strin...
In addition, the function can handle input data arrays of variable length—it just needs to know where the array starts (via data), how long it is (via nval), and how big each element is (via the float declaration for *data). Another aspect of pointers is that they are the means ...
A well-formed locale type has the form "" | [0-9a-zA-Z]{3,8} ('-' [0-9a-zA-Z]{3,8})* (it can be empty, or a series of subtags 3-8 alphanums in length). A well-formed locale attribute has the form [0-9a-zA-Z]{3,8} (it is a single subtag with the same form...