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1.5 Strings — building a message

Lesson

To combine text with a computed number, put the math in parentheses so it is added first, then joined to the text.

System.out.println("Sum: " + 2 + 3);    // Sum: 23  (left to right)
System.out.println("Sum: " + (2 + 3));  // Sum: 5   (parentheses first)

▶ Try it: run this, then change something and run it again.

String item = "Pen";
int qty = 3;
System.out.println(item + " x" + qty);

What does "Sum: " + 2 + 3 print?

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What does "Sum: " + (2 + 3) print?

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Given int a = 3, b = 4;, fill the blank so it prints Total: 7.

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Assemble an expression that produces Hi, Ada! when name holds "Ada".

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Type exactly what this program prints.

public class Main { public static void main(String[] a){
    String name = "Ada";
    System.out.println("Hi, " + name);
}}

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