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🔢 Java Output: Printing Numbers to the Console

You’ve already learned how to print text using System.out.println(). Now, let’s take it a step further — printing numbers!

At GoNimbus, we teach you not just how to print numbers in Java, but also how Java handles them behind the scenes.

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🧮 Printing Numbers

To display numbers in Java, you can simply use System.out.println() without quotes.

✅ Example:

public class PrintNumbers {
  public static void main(String[] args) {
    System.out.println(100);
    System.out.println(25 + 75);
    System.out.println(3.14159);
  }
}

🖥️ Output:

100
100
3.14159

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❗ Important Difference: Text vs Number

Type	Syntax	Description
Text	"100"	Treated as a string (text)
Number	100	Treated as a numeric value (can be used in calculations)

Example:

System.out.println("100" + "200");  // Text concatenation
System.out.println(100 + 200);      // Numeric addition

🖥️ Output:

100200
300

🔎 Notice the difference? One joins the strings, the other performs math!

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🔄 Combining Text and Numbers

You can combine both text and numbers in one statement using the + operator:

System.out.println("The result is: " + 10 + 5);

🖥️ Output:

The result is: 105

📌 Why? Because everything after the first string is treated as more text.

To fix it and get the correct numeric sum, group the numbers inside parentheses:

System.out.println("The result is: " + (10 + 5));

🖥️ Output:

The result is: 15

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🧪 Try It Yourself on GoNimbus

Open the GoNimbus Java Editor and type:

public class NumbersDemo {
  public static void main(String[] args) {
    System.out.println(42);
    System.out.println("Age: " + 25);
    System.out.println("Total: " + (100 + 50));
  }
}

🖥️ Output:

42
Age: 25
Total: 150

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🧠 GoNimbus Quick Tips

• Don’t wrap numbers in quotes if you want to perform calculations.
• Use parentheses () to control how Java evaluates math expressions.
• Java can print integers, decimals (float/double), and results of expressions.

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🔜 Up Next: Java Variables and Data Types

Now that you know how to output numbers, let’s explore how to store and manage them using variables.

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