这里,同时比较了UpperCase和LowerCase,是为了兼容Georgian字符。 见String类的regionMatches()方法。如下(29~32行): 1publicbooleanregionMatches(booleanignoreCase,inttoffset,2String other,intooffset,intlen) {3charta[] =value;4intto =t
moving them towards the middle simultaneously and comparing the corresponding characters for equality.Ignore non-alphanumeric characters: During the comparison, ignore non-alphanumeric characters in the string.Case-insensitive comparison: Convert all characters to either uppercase or lowercase for ...
publicclassCaseInsensitiveComparison{publicstaticvoidmain(String[]args){// 步骤 1: 准备字符串数据Stringstr1="HelloWorld";// 第一个字符串Stringstr2="helloworld";// 第二个字符串// 步骤 2: 使用.equalsIgnoreCase()方法进行比较booleanareEqual=str1.equalsIgnoreCase(str2);// 比较结果// 步骤 3: 输出...
CaseSensitive Comparison: false CaseInsensitive Comparison: true 这表明 equals() 方法在区分大小写的情况下比较字符串时返回 false,而 equalsIgnoreCase() 方法在不区分大小写的情况下比较字符串时返回 true。 整合解决方案: 在Java程序中,如果需要实现不区分大小写的字符串比较,应使用 equalsIgnoreCase() 方法。
String str = str1 + str2; 1. 2. 3. 编译期优化:对于编译期能确定结果的简单字符串拼接(如上述示例),编译器会将其优化为单个字面量赋值。 运行期动态拼接:对于动态生成或运行期才能确定的字符串拼接,JVM会使用StringBuilder(或StringBuffer)在运行时进行拼接操作,最终结果也是一个新的字符串对象,位于堆上。
CaseInsensitiveString cis=newCaseInsensitiveString("Polish");String s="polish"; 如同我们预料的那样,cis.equals(s)返回true,但是s.equals(cis)却返回false,因为String类并不知道有CaseInsensitiveString,故直接false掉,我们还可以创建一个List,把cis加上去 ...
theequals(String str)method also returnstrue. ThecompareToIgnoreCase(String str)method is similar to the first one, except that it ignores the case. It usesComparatorwithCASE_INSENSITIVE_ORDERfor case insensitive comparison. If the value is zero, thenequalsIgnoreCase(String str)will also return true...
为了消除这个问题,只要从equals方法中移除与String进行交互的,考虑不周的尝试即可。一旦你这样做了,你可以重构这个方法给它一个返回即可: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 @Overridepublicbooleanequals(Object o){returnoinstanceofCaseInsensitiveString&&((CaseInsensitiveString)o).s.equalsIgnoreCase...
String 接口分析 String类型所实现的接口 publicfinalclassStringimplementsjava.io.Serializable, Comparable<String>, CharSequence Serializable接口和Comparable接口大家都比较熟悉,一个是序列化接口,一个是比较able类接口,分别对应 //序列化标记号privatestaticfinallongserialVersionUID =-6849794470754667710L;publicintcompare...
public static final Comparator<String> CASE_INSENSITIVE_ORDER A Comparator that orders String objects as by compareToIgnoreCase. This comparator is serializable. Note that this Comparator does not take locale into account, and will result in an unsatisfactory ordering for certain locales. The Collator...