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Announcements & Review

Announcements Examples posted after lecture on schedule Discussion Section exercises on line before 9am Tuesdays Lab 2 Due Thursday 10pm. Last Time: Compilation Scaffolding print(): displays a value println(): displays a value and moves cursor to the next line.

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Announcements & Review

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  1. Announcements Examples posted after lecture on schedule Discussion Section exercises on linebefore 9am Tuesdays Lab 2 Due Thursday 10pm Last Time: Compilation Scaffolding print(): displays a value println(): displays a value and moves cursor to the next line Announcements & Review Lecture 4: For Loops

  2. Today More on Beauty Analogy: Formatting Paragraphs Sequencing Analogy: a well constructed essay Note on punctuation: end your statements Repetition (i for iteration) for (int i = 0; i < 10; i++) { // your code here } Lecture 4: For Loops

  3. Beauty /* Kathryn S McKinley * September 2005 * file: Song.java - a few lines from a good song * Song: All These Things That I’ve Done * Band: The Killers, Album: Hot Fuss */ public class Song { public static void main (String [] args) { System.out.println(“You are going to bring yourself down”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“Yah yah, you got to help me out.”); } } Lecture 4: For Loops

  4. I’m Ugly /* Kathryn S McKinley * September 2005 * file: Song.java - a few lines from a good song * Song: All These Things That I’ve Done * Band: The Killers, Album: Hot Fuss */ public class Song { public static void main (String [] args) { System.out.println(“You are going to bring yourself down”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“Yah yah, you got to help me out.”); } } Lecture 4: For Loops

  5. Paragraphs // song lines System.out.println(“You are going to bring yourself down”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“Yah yah, you got to help me out.”); Lecture 4: For Loops

  6. Paragraphs // verse System.out.println(“You are going to bring yourself down”); //chorus System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); //verse System.out.println(“Yah yah, you got to help me out.”); Lecture 4: For Loops

  7. Can we do better? // verse System.out.println(“You are going to bring yourself down.”); //chorus System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); System.out.println(“I’ve got soul, but I’m not a soldier. ”); //verse System.out.println(“Yah yah, you got to help me out.”); Lecture 4: For Loops

  8. Yes! // verse System.out.println(“You are going to bring yourself down.”); //chorus for (int i =0; i < 10; i++) { System.out.println(“I’ve got soul, but I’m not a soldier. ”); } //verse System.out.println(“Yah yah, you got to help me out.”); Lecture 4: For Loops

  9. For: Definite Loop Three parts for (i = 0; i < 99; i++) { // loop body } • Initialization • Test • Increment Lecture 4: For Loops

  10. For: Definite Loop Three parts for (int i = 0; i < 99; i++) { // loop body in here } • Initialization - int i = 0; • one time only • Test - if i < 99 then execute body • every time • Increment - i++ add 1 to the value of I • every time Lecture 4: For Loops

  11. BlueJ Examples Lecture 4: For Loops

  12. Questions? Lecture 4: For Loops

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