public class ReplaceTest { public static void main(String args[]) { String st1 = "Welcome to JavaFolder"; System.out.println("Before replace : " +st1); String replaceString = st1.replace('W', 'e'); System.out.println(replaceString); } } 复制代码 1. 2. 3. 4. 5. 6. 7. 8....
replace(CharSequence target, CharSequence replacement): 替换字符串中所有出现的指定字符序列。 replaceAll(String regex, String replacement): 替换字符串中所有匹配正则表达式的部分。 1.1 replace() 方法 replace()方法用于简单的字符替换,实际上是将目标字符序列替换为另一个字符序列。例如,如果我们有一个字符串,...
public static void method_replace() { String s = "hello java"; //String s1 = s.replace('a','n'); //String s1 = s.replace('w','n'); 如果要替换的字符不存在,返回的还是原串 String s1 = s.replace("java","world");//打印结果是:hello world sop("s="+s); //打印结果是:hello...
The replaceFirst() method replaces the first match of a regular expression in a string with a new substring.Replacement strings may contain a backreference in the form $n where n is the index of a group in the pattern. In the returned string, instances of $n will be replaced with the ...
System.out.print ("After a replace method call: "); System.out.println (resultantString); In the above code snippet, the ‘replace’ method finds and replaces all the occurrences of the‘J’ character in ‘sampleString’ with a ‘C’ character and saves a result in a new String object...
String The resulting string Remarks Replaces each substring of this string that matches the literal target sequence with the specified literal replacement sequence. The replacement proceeds from the beginning of the string to the end, for example, replacing "aa" with "b" in the string "aaa" wil...
java_method_String_字符串某段替换为*** 1.电话号码三到七位之间用***表示 1strPhone.replace(3, 7, "***");
ThereplaceAll()method replaces each substring that matches the regex of the string with the specified text. Example classMain{publicstaticvoidmain(String[] args){ String str1 ="Java123is456fun";// regex for sequence of digitsString regex ="\\d+";// replace all occurrences of numeric// di...
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1. Java String replace() Overview In tutorial, We'll learn aboutJava String replace() methodandexplanation with examples.replace() method is used to replace a character with another character in a Stringand this method returns a new string after replacing characters. ...