String camel case and underscore format conversion

Original link: https://juejin.cn/post/7106521793934360584

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rely

# <!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>31.1-jre</version>
</dependency>

---

single conversion

import com.google.common.base.Ascii;
import com.google.common.base.CaseFormat;
import com.google.common.base.Converter;


CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.LOWER_UNDERSCORE, "family_name_and_last_name"));   // family_name_and_last_name
CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.UPPER_UNDERSCORE, "family_name_and_last_name"));   // FAMILY_NAME_AND_LAST_NAME
CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL, "family_name_and_last_name"));        // familyNameAndLastName
CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.UPPER_CAMEL, "family_name_and_last_name"));        // FamilyNameAndLastName
CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.LOWER_HYPHEN, "family_name_and_last_name"));       // family-name-and-last-name

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define converter

String result = lowerUpperUnderscore("family_name_and_last_name"); // FAMILY_NAME_AND_LAST_NAME

private String lowerUpperUnderscore(String str) {
    
    
    Converter<String, String> converter = CaseFormat.LOWER_UNDERSCORE.converterTo(CaseFormat.UPPER_UNDERSCORE);
    return converter.convert(str);
}