JAVA 小工具 驼峰命名转下划线命名 parsingCamelCaseToUnderline

Posted 2022-12-12 辉常努腻

JAVA 小工具

驼峰命名转下划线命名

public static String parsingCamelCaseToUnderline(String params)
    char[] charArray = params.toCharArray();
    params = "";
    for (int i = 0; i < charArray.length; i++) 
        char c = charArray[i];
        if( i == 0 )
            params += Character.toLowerCase(c);
        else
            params += (Character.isUpperCase(c) ? "_" + Character.toLowerCase(c) : c);
        
    
    return params;

示例：

System.out.println(parsingCamelCaseToUnderline("createTime"));
System.out.println(parsingCamelCaseToUnderline("CreateTime"));
System.out.println(parsingCamelCaseToUnderline("UreateTime"));

console ......
create_time
create_time
ureate_time