int indexOf(String str) 1. 核心查找代码: for (int i = sourceOffset + fromIndex; i <= max; i++) { /* Look for first character. */ if (source[i] != first) { while (++i <= max && source[i] != first); } /* Found first
1publicclassStringCompareMethod {2publicstaticvoidmain(String args[]){3String str1 = "elapant";4String str2 = "ELEPANT";//定义两个字符串5String str3 = "Apple";6String str4 = "apple";7/***1、compareTo方法***/8//不忽略字符串字符大小写9if(str1.compareTo(str2)>0){10System.out....
int indexOf(int ch, int fromIndex): It returns the index within this string of the first occurrence of the specified character, starting the search at the specified index. int indexOf(int ch, int fromIndex):它返回指定字符首次出现在此字符串中的索引,从指定索引处开始搜索。 int indexOf(int ch...
* 因为在String类中会多次使用,所以封装为私有方法*/privateintindexOfSupplementary(intch,intfromIndex) {if(Character.isValidCodePoint(ch)) {finalchar[] value =this.value;finalcharhi =Character.highSurrogate(ch);finalcharlo =Character.lowSurrogate(ch);finalintmax = value.length - 1;for(inti = fro...
Here are some other String methods for finding characters or substrings within a string. The String class provides accessor methods that return the position within the string of a specific character or substring: indexOf() and lastIndexOf(). The indexOf() methods search forward from the beginni...
Index values refer to char code units, so a supplementary character uses two positions in a String. The String class provides methods for dealing with Unicode code points (i.e., characters), in addition to those for dealing with Unicode code units (i.e., char values). Unless otherwise...
append(Character.toLowerCase(c)); } return sb.toString(); } /** * 是否包含字符串 * * @param str 验证字符串 * @param strs 字符串组 * @return 包含返回true */ public static boolean inStringIgnoreCase(String str, String... strs) { if (str != null && strs != null) { for (...
The String class represents character strings. C# 複製 [Android.Runtime.Register("java/lang/String", DoNotGenerateAcw=true)] public sealed class String : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.IO.ISerializable, Java.Lang.ICharSequence, Java.Lang.IComparable, System....
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public static void main(String[] args) throws UnsupportedEncodingException { searchChineseCharacter(“Good morning”); searchChineseCharacter(“hello 早上好”); } //找出一个字符串中的汉字 public static void searchChineseCharacter(String str){ ...