Convert to Uppercase in Java: Explanation & Practice

Problem summary

Convert 'hello world' to uppercase.

Starter code

public class Main {
    public static void main(String[] args) {
        String text = "hello world";
        
        // Convert and print uppercase
    }
}

Expected output and test cases

• Uppercase conversion

  HELLO WORLD

Hints

1. Use .toUpperCase() method
2. Returns a new string
3. Original string is unchanged

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