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2 changes: 1 addition & 1 deletion .idea/misc.xml

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6 changes: 6 additions & 0 deletions .idea/vcs.xml

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15 changes: 12 additions & 3 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ Review the flow of execution through the program [Zippo.java](src/Zippo.java), a
2. Write the number 2 next to the second line of code, and so on until the end of the program.
3. What is the value of the parameter `blimp` when `baffle` gets invoked?
4. What is the output of this program?

Answer - ik, rattle, ping zoop, boo-wa-ha-ha
---

## Part 3: Stack Diagram and Program Output
Expand All @@ -43,7 +43,7 @@ Answer questions about stack diagrams and program output without running the pro
2. What is the output by the following program?
* Paste your output in the bash code-block below.
```bash

// refer to the attached pic 'Readme pt 3'
```

---
Expand All @@ -55,7 +55,10 @@ Explore method invocations and their consequences.

**Questions to answer in the README.md via Markdown:**
1. What happens if you invoke a value method and don’t do anything with the result; that is, if you don’t assign it to a variable or use it as part of a larger expression?
2. What happens if you use a void method as part of an expression? For example, try `System.out.println("boo!") + 7;`.
// P. 60 makes mention of value methods, but not of consequences for not using the result. Google Bard/Gemini says the General Behavior has 3 possible outcomes; 1- Discarding the Value - the method executes but the value isn't stored and becomes lost. 2- No impact on the program's core logic. 3- Potential Performance implications, that could be negligible for simple programs or could be relevant for heavy processing work.
2. What happens if you use a void method as part of an expression? For example, try `System.out.println("boo!") + 7;`.
// When I tried to compile this on a scratch paper class, I received the result "Operator '+' cannot be applied to 'void', 'int'"


---

Expand All @@ -71,6 +74,12 @@ Draw a stack diagram that shows the state of the program the second time `zoop`
2. What is the complete output?
* Paste your output in the bash code-block below.
```bash
just for
any not more
It's breakfast
!

Process finished with exit code 0

```

Expand Down
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28 changes: 28 additions & 0 deletions src/RedesignDate.java
Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
import java.util.Scanner;
public class RedesignDate {
static void printAmerican() {
String day = "Thursday, ";
String month = "February ";
String date = "8 ";
String year = "2024 ";
System.out.println(day + month + date + year);
}
static void printEuropean() {
String day = "Thursday ";
String month = "February ";
String date = "8 ";
String year = "2024 ";
System.out.println(day + date + month + year);
}

public static void main(String[] args) {

System.out.println("Enter 1 for American date format or 2 for European format");
Scanner in = new Scanner(System.in);
int choice = in.nextInt();
if (choice == 1) {
printAmerican();
} else {
printEuropean();
}
}}
23 changes: 12 additions & 11 deletions src/Zippo.java
Original file line number Diff line number Diff line change
@@ -1,19 +1,20 @@
public class Zippo {
public static void baffle(String blimp) {
System.out.println(blimp);
zippo("ping", -5);
public static void baffle(String blimp) { // 6
System.out.println(blimp); // 7
zippo("ping", -5); // 8
}
public static void zippo(String quince, int flag) {
if (flag < 0) {
System.out.println(quince + " zoop");
} else {
System.out.println("ik");
baffle(quince);
System.out.println("boo-wa-ha-ha");
public static void zippo(String quince, int flag) { // 2
if (flag < 0) { // 9
System.out.println(quince + " zoop"); // 10
} else { // 3
System.out.println("ik"); // 4
baffle(quince); // 5
System.out.println("boo-wa-ha-ha"); // 11
}
}

public static void main(String[] args) {
zippo("rattle", 13);
}
} // 1, starts with main.
}
// ik, rattle, ping zoop, boo-wa-ha-ha