Convert Text to dot.case

Converting Text to dot.case

dot.case separates words with periods (.) and lowercases every letter. While less common than camelCase or snake_case, dot notation is the standard in several important technical contexts.

Basic Conversion

Input:  User First Name
Output: user.first.name

Input:  backgroundColor
Output: background.color

Input:  MAX_RETRY_COUNT
Output: max.retry.count

Where dot.case Is Used

Java Package Names

package com.example.myapp.services;
package org.apache.commons.lang3;
package io.github.username.library;

Java's package naming convention uses reverse domain notation with dots, creating a hierarchical namespace.

Configuration Property Keys

# Spring Boot application.properties
server.port=8080
spring.datasource.url=jdbc:postgresql://localhost/mydb
spring.datasource.username=admin
logging.level.root=INFO

# Gradle properties
org.gradle.jvmargs=-Xmx2048m
org.gradle.parallel=true

JavaScript Object Access

// Dot notation for object property access
user.profile.firstName
config.database.host
process.env.NODE_ENV

Bundle Identifiers

com.apple.mobilesafari
com.google.chrome
org.mozilla.firefox

iOS and Android apps use reverse-domain dot notation for unique bundle/package identifiers.

Conversion Algorithm

1. Split the input into words (by spaces, underscores, hyphens, or case transitions).
2. Lowercase every word.
3. Join with dots (.).

dot.case vs. Other Cases

dot.case:    user.first.name
kebab-case:  user-first-name
snake_case:  user_first_name
camelCase:   userFirstName

Hierarchical Nature

Unlike other naming conventions, dot.case implies a hierarchical structure. Each dot represents a level of nesting:

spring.datasource.url
└── spring
    └── datasource
        └── url

This makes it natural for configuration systems where properties are organized in a tree structure.

Edge Cases

• Single word: "hello" → "hello".
• Already dot.case: passes through unchanged.
• Consecutive dots should be collapsed: "a..b" → "a.b".
• File extensions (e.g., "index.html") may need special handling to avoid splitting at the extension dot.