Java Online Compiler
Example: StringCaseConversion in Java
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Main.java
STDIN
Run
// StringCaseConversion public class Main { public static void main(String[] args) { // Step 1: Initialize a mixed-case string String mixedCase = "HelloWorld"; // Step 2: Convert to uppercase String upperCase = mixedCase.toUpperCase(); // Step 3: Convert to lowercase String lowerCase = mixedCase.toLowerCase(); // Step 4: Print the original and converted strings System.out.println("Original string: " + mixedCase); System.out.println("Uppercase string: " + upperCase); System.out.println("Lowercase string: " + lowerCase); } }
Output
Clear
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