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Copy pathSSUtils.java
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83 lines (76 loc) · 2.36 KB
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package me.beldon.util;
import java.util.UUID;
/**
* Created by Beldon.
* Copyright (c) 2016/10/14, All Rights Reserved.
* http://beldon.me
*/
public class SSUtils {
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)) {
if (i != 0) {
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 < len) {
sb.append(Character.toUpperCase(param.charAt(i)));
}
} else {
if (i == 0) {
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 "";
}
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 < len) {
sb.append(Character.toUpperCase(param.charAt(i)));
}
} else {
sb.append(c);
}
}
return sb.toString();
}
public static String getUUID() {
return UUID.randomUUID().toString().replaceAll("-", "");
}
public static void main(String[] args) {
System.out.println(camelToUnderline("BeldonHelper"));
System.out.println(underlineToCamel("beldon_helper"));
}
}