Java怎么使用replace替换字符串中的某一位的字符 java Sting 如何替换指定位置的 字符？
Java\u600e\u4e48\u4f7f\u7528replace\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u67d0\u4e00\u4f4d\u7684\u5b57\u7b26\u5b9e\u73b0\u601d\u8def\uff1a\u5148\u83b7\u53d6\u5230\u7279\u5b9a\u4f4d\u7f6e\u7684\u5b57\u7b26\uff0c\u4e4b\u540e\u76f4\u63a5\u66ff\u6362\u5373\u53ef
public class strRepalce {
public static void main(String[]args){
//\u8981\u66ff\u6362\u7684\u4e00\u4e2a\u5b57\u7b26\u4e32
String str="abcmdf";
//\u83b7\u53d6\u6307\u5b9a\u5b57\u7b26\u4f4d\u7f6e \u4f8b\u5982\u53d6 \u66ff\u6362c\u5b57\u7b26
int i=str.indexOf("c");
//str.charAt(i) \u53d6\u51fa\u6307\u5b9a\u5b57\u7b26(char\u7c7b\u578b \u65e0\u6cd5\u76f4\u63a5\u8f6cstring) String.valueOf \u8f6c\u6362\u6210string\u7c7b\u578b
String str2=String.valueOf(str.charAt(i));
//X\u4e3a\u6307\u5b9a\u66ff\u6362\u5b57\u7b26
str=str.replaceFirst(str2,"X");
System.out.println(str);
}
}
public class strRepalce {
public static void main(String[]args){
//要替换的一个字符串
String str="abcmdf";
//获取指定字符位置 例如取 替换c字符
int i=str.indexOf("c");
//str.charAt(i) 取出指定字符(char类型 无法直接转string) String.valueOf 转换成string类型
String str2=String.valueOf(str.charAt(i));
//X为指定替换字符
str=str.replaceFirst(str2,"X");
System.out.println(str);
}
}
//格式化时间
public static String formatTime(String time) {
String t = time.replace("T", " ");
t = t.substring(0, 16);
return t;
}
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绛旓細replace(瑕佹浛鎹㈢殑鐩爣锛屾浛鎹㈠悗鏂板);濡傦細var obj="weclome to my blog!";var newobj=obj.replace("my","our");alert(newobj);杈撳嚭鐨勫间负锛歸eclome to our blog!
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绛旓細replace(CharSequence target, CharSequence replacement)浣跨敤鎸囧畾鐨勫瓧闈㈠兼浛鎹㈠簭鍒楁浛鎹㈡瀛楃涓叉墍鏈夊尮閰嶅瓧闈㈠肩洰鏍囧簭鍒楃殑瀛愬瓧绗︿覆銆俽eplaceAll(String regex, String replacement)浣跨敤缁欏畾鐨 replacement 鏇挎崲姝ゅ瓧绗︿覆鎵鏈夊尮閰嶇粰瀹氱殑姝ｅ垯琛ㄨ揪寮忕殑瀛愬瓧绗︿覆銆
绛旓細瀹炵幇鎬濊矾锛氬厛鑾峰彇鍒扮壒瀹氫綅缃殑瀛楃锛屼箣鍚庣洿鎺ユ浛鎹㈠嵆鍙 public class strRepalce { public static void main(String[]args){ //瑕佹浛鎹㈢殑涓涓瓧绗︿覆 String str="abcmdf";//鑾峰彇鎸囧畾瀛楃浣嶇疆 渚嬪鍙 鏇挎崲c瀛楃 int i=str.indexOf("c");//str.charAt(i) 鍙栧嚭鎸囧畾瀛楃(char绫诲瀷 鏃犳硶鐩存帴杞瑂tring) ...
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绛旓細JAVA涓string.replace()鍜宻tring.replaceAll()鐨勫尯鍒強鐢ㄦ硶涔嶄竴鐪嬶紝瀛楅潰涓婄悊瑙ｅソ鍍弐eplace鍙浛鎹㈢涓涓嚭鐜扮殑瀛楃锛堝彈javascript鐨勫奖鍝嶏級锛宺eplaceall鏇挎崲鎵鏈夌殑瀛楃锛屽叾瀹炲ぇ涓嶇劧锛屽彧鏄浛鎹㈢殑鐢ㄩ斾笉涓鏍枫俻ublic String replace(char oldChar,char newChar) 杩斿洖涓涓柊鐨勫瓧绗︿覆锛屽畠鏄氳繃鐢 newChar 鏇挎崲姝...
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