本文執行個體為大家分享了java駝峰轉換的具體代碼，供大家參考，具體内容如下
将"_"轉換成駝峰，将駝峰轉換成"_"。
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class BeanHump {
//轉變的依賴字元
public static final char UNDERLINE='_';
public static String camelToUnderline(String param){
if (param==null||"".equals(param.trim())){
return "";
}
int len=param.length();
StringBuilder sb=new StringBuilder(len);
for (int i = 0; i < len; i++) {
char c=param.charAt(i);
if (Character.isUpperCase(c)){
sb.append(UNDERLINE);
sb.append(Character.toLowerCase(c));
}else{
sb.append(c);
}
}
return sb.toString();
}
public static String underlineToCamel(String param){
if (param==null||"".equals(param.trim())){
return "";
}
int len=param.length();
StringBuilder sb=new StringBuilder(len);
for (int i = 0; i < len; i++) {
char c=param.charAt(i);
if (c==UNDERLINE){
if (++i
sb.append(Character.toUpperCase(param.charAt(i)));
}
}else{
sb.append(c);
}
}
return sb.toString();
}
public static String underlineToCamel2(String param){
if (param==null||"".equals(param.trim())){
return "";
}
StringBuilder sb=new StringBuilder(param);
Matcher mc= Pattern.compile(UNDERLINE+"").matcher(param);
int i=0;
while (mc.find()){
int position=mc.end()-(i++);
String.valueOf(Character.toUpperCase(sb.charAt(position)));
sb.replace(position-1,position+1,sb.substring(position,position+1).toUpperCase());
}
return sb.toString();
}
public static void main(String[] args) {
System.out.println(camelToUnderline("userNameAll"));
System.out.println(underlineToCamel("user_name_all"));
System.out.println(underlineToCamel2("user_name_all"));
}
}
運作結果：
以上就是本文的全部内容，希望對大家的學習有所幫助，也希望大家多多支援我們。
時間： 2018-07-08