In the following example we are demonstrating the use of replaceFirst() method. This method replaces the part of a string with a new specified string. Thedifference between replaceFirst() and replaceAll() methodis that the replaceFirst() replaces the first occurrence while replaceAll() replaces ...
Thereplace()method is an overloaded method and comes in two versions: publicStringreplace(charoldChar,charnewChar);publicStringreplace(CharSequencetarget,CharSequencereplacement); The first method accepts thechartypes. It searches the string for specifiedoldCharand replaces each occurrence ofoldCharwith...
// Find index within this string of the first occurrence 'i' // starting the search at index 4. // ==> 5 idx = str.indexOf('i', 4); System.out.println("- indexOf('i',4) = " + idx); // index within this string of the first occurrence of "te". // ==> 8 idx = st...
其实是String类实现了Comparable接口,必须要实现其中的方法compareTo,那么在String类中也实现了这个方法,那么这个方法的具体返回如下: the value 0 if the argument string is equal to this string; a value less than 0 if this string is lexicographically less than the string argument; and a value greater ...
To replace the first occurrence of a character in Java, use the replaceFirst() method. Here is our string. String str = "The Haunting of Hill House!"; Let us replace the first occurrence of character “H” str.replaceFirst("(?:H)+", "B"); The following is the complete example. ...
public class CollectionEach { public static void main(String[] args) { //创建一个集合 Collection books = new HashSet(); books.add("轻量级java ee企业应用实战"); books.add("疯狂Java讲义"); books.add("疯狂Android讲义"); //调用forEach()方法遍历集合 books.forEach(obj -> System.out.printl...
StringBuffer 上的主要操作是 append 和insert 方法,可重载这些方法,以接受任意类型的数据。每个方法都能有效地将给定的数据转换成字符串,然后将该字符串的字符添加或插入到字符串缓冲区中。append 方法始终将这些字符添加到缓冲区的末端;而 insert 方法则在指定的点添加字符。 例如,如果 z 引用一个当前内容是“st...
You're using some random thingy (Rnd) to determine whether or not to replace. Perhaps for "e" (one occurrence) it returned something over 50 and for "i" it didn't? I've tried your code (using another random number returning method instead of Rnd.get) and I got "Einstein", "E*...
WilderPereira/ftwfy - The real life Command/Ctrl + F - Android App that uses the Mobile Vision API to allow you to search for any occurrence of a text in a digital document. hanjoongcho/aaf-easydiary - This is a diary application optimized to user experience. adrielcafe/GreenHellCompanion...
String replace){if(isBlank(string)||null==replace){//参数不合法,原样返回returnstring;}StringBuilder sBuilder=newStringBuilder(string);int lastIndexOf=sBuilder.lastIndexOf(match);if(-1==lastIndexOf){returnstring;}returnsBuilder.replace(lastIndexOf,lastIndexOf+match.length(),replace).toString();}...