com.kyle.component.kdb.annotation.compiler.CamelUtils Maven / Gradle / Ivy

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package com.kyle.component.kdb.annotation.compiler;

/**
 * @author Kyle
 * @time 2021/5/13
 */
public class CamelUtils {

    /**
     * 下划线转驼峰，首字母小写
     *
     * @param name
     * @return
     */
    public static String camelNameLowerCase(String name) {
        String camelName = camelNameUpperCase(name);
        return camelName.substring(0, 1).toLowerCase() + camelName.substring(1);
    }

    /**
     * 下划线转驼峰，首字母大写
     *
     * @param name
     * @return
     */
    public static String camelNameUpperCase(String name) {
        StringBuilder result = new StringBuilder();
        if (name == null || name.isEmpty()) {
            return "";
        } else if (!name.contains("_")) {
            return name.substring(0, 1).toUpperCase() + name.substring(1);
        }
        String camels[] = name.split("_");
        for (String camel : camels) {
            if (camel.isEmpty()) {
                continue;
            }
            result.append(camel.substring(0, 1).toUpperCase());
            result.append(camel.substring(1).toLowerCase());
        }
        return result.toString();
    }

}