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Commit 9eb5875

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case conversion snippets
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---
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title: camelCase to snake_case
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description: Converts a camelCase string into snake_case
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author: Mcbencrafter
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tags: string,conversion,camel-case,snake-case
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---
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```java
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public static String camelToSnake(String camelCase) {
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return camelCase.replaceAll("([a-z])([A-Z])", "1ドル_2ドル").toLowerCase();
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}
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// Usage:
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System.out.println(camelToSnake("helloWorld")); // "hello_world"
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```
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---
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title: snake_case to camelCase
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description: Converts a snake_case string into camelCase
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author: Mcbencrafter
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tags: string,conversion,camel-case,snake-case
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---
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```java
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import java.util.regex.Pattern;
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public static String snakeToCamel(String snakeCase) {
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return Pattern.compile("(_)([a-z])")
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.matcher(snakeCase)
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.replaceAll(match -> match.group(2).toUpperCase());
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}
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// Usage:
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System.out.println(snakeToCamel("hello_world")); // "helloWorld"
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```
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---
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title: String To camelCase
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description: Converts a string into camelCase
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author: Mcbencrafter
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tags: string,conversion,camel-case
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---
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```java
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public static String stringToCamelCase(String text) {
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String[] words = text.split("\\s+");
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StringBuilder camelCase = new StringBuilder(
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words[0].substring(0, 1).toLowerCase() + words[0].substring(1)
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);
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for (int i = 1; i < words.length; i++) {
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camelCase.append(words[i].substring(0, 1).toUpperCase());
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camelCase.append(words[i].substring(1));
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}
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return camelCase.toString();
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}
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// Usage:
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System.out.println(stringToCamelCase("Hello world test")); // "helloWorldTest"
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```
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---
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title: String To param-case
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description: Converts a string into param-case
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author: Mcbencrafter
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tags: string,conversion,param-case
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---
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```java
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public static String stringToParamCase(String text) {
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return text.toLowerCase().replaceAll("\\s+", "-");
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}
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// Usage:
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System.out.println(stringToParamCase("Hello World 123")); // "hello-world-123"
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```
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---
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title: String To PascalCase
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description: Converts a string into PascalCase
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author: Mcbencrafter
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tags: string,conversion,pascal-case
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---
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```java
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public static String stringToPascalCase(String text) {
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String[] words = text.split("\\s+");
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StringBuilder pascalCase = new StringBuilder();
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for (String word : words) {
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pascalCase.append(word.substring(0, 1).toUpperCase());
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pascalCase.append(word.substring(1).toLowerCase());
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}
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return pascalCase.toString();
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}
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// Usage:
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System.out.println(stringToPascalCase("hello world")); // "HelloWorld"
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```
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---
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title: String To snake_case
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description: Converts a string into snake_case
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author: Mcbencrafter
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tags: string,conversion,snake-case
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---
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```java
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public static String stringToSnakeCase(String text) {
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return text.toLowerCase().replaceAll("\\s+", "_");
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}
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// Usage:
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System.out.println(stringToSnakeCase("Hello World 123")); // "hello_world_123"
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```
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---
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title: String To Titlecase
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description: Converts a string into Title Case, where the first letter of each word is capitalized and the remaining letters are lowercase
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author: Mcbencrafter
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tags: string,conversion,title-case
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---
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```java
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public static String convertToTitleCase(String text) {
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String[] words = text.split("(?<=\\S)(?=\\s+)|(?<=\\s+)(?=\\S)"); // this is needed to preserve spaces (text.split(" ") would remove multiple spaces)
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StringBuilder capitalizedText = new StringBuilder();
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for (String word : words) {
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if (word.trim().isEmpty()) {
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capitalizedText.append(word);
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continue;
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}
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capitalizedText.append(Character.toUpperCase(word.charAt(0)))
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.append(word.substring(1).toLowerCase());
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}
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return capitalizedText.toString().trim();
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}
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// Usage:
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System.out.println(convertToTitleCase("heLlo wOrld")); // "Hello World"
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```

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