String类的replace()方法有多种重载版本,可以替换字符或子字符串。 示例代码 publicclassReplaceExample{publicstaticvoidmain(String[]args){Stringtext="I love apples and apples are my favorite.";// 替换单个字符StringreplacedChar=text.replace('a','o');System.out.println("Replace character: "+replacedC...
public String replace(char oldChar, char newChar); 1. Returns a string resulting from replacing all occurrences of {@code oldChar} in this string with {@code newChar}. If the character {@code oldChar} does not occur in the character sequence represented by this {@code String} object, t...
System.out.println(myName); http://stackoverflow.com/questions/6952363/java-replace-a-character-at-a-specific-index-in-a-string
1string a,b;23strings("AAAAAAAA");45strings2p("BBB");67constchar*cs2p="CCC";89a=s.replace(1,3,s2p,1,2);// s= ” ABBAAAA ”1011b=s.replace(4,3,cs2p,1);// s= ” ABBAC ” (3)用 _Count 个character _Ch , 代替操作string 中从 _Pos1 开始的 _Num1 个字符 basic _ string...
String str=scan.nextLine(); String str1="asdljbbabdjsfkaa3938bb";charc_low=str.charAt(0); System.out.println(c_low);charc_up=Character.toUpperCase(c_low); str=str.replaceFirst(String.valueOf(c_low), String.valueOf(c_up));
publicStringreplaceSpace(String s){// 获取原始字符串长度byte[]sb=s.getBytes();// 获取替换字符串长度byte[]addByte="%20".getBytes();// 计算被替换字符串出现次数int addIndex=0;for(int i=0;i<sb.length;i++){if(sb[i]==32){addIndex++;}}// 计算新字符串长度char[]c=newchar[sb.length...
public String replaceAll(String regex, String replacement) { return Pattern.compile(regex).matcher(this).replaceAll(replacement); } replace各个方法的原理 我们通过以下的例子来分析他们的原理。 @Test public void stringReplace() { replaceFirst("year = 1929. month=07, day=29, other=\\d{2}"); ...
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. ...
Thereplace()method does not change the original string. Note If you replace a value, only the first instance will be replaced. To replace all instances, use a regular expression with the g modifier set. Read more about regular expressions in our: ...
In Java, String ‘replace’ and its variants are used to replace a character, string or a regular expression from a String object with a character or string replacement. When there is a change in the String object while performing ‘replace’, a new String is returned whereas in a case of...