se añaden los ejercicios realizados hasta el momento jgaona 14/07/2018

src/main/java/jorgeantonio/exercices/ex03_1_exercise/ShoppingCart.java

@@ -0,0 +1,16 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex03_1_exercise;
+
+/**
+ *
+ * @author Hp
+ */
+public class ShoppingCart {
+    public static void main (String[] args){
+        System.out.println("Este es mi mensaje");
+     }
+}

src/main/java/jorgeantonio/exercices/ex04_1_exercise/ShoppingCart.java

@@ -0,0 +1,26 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex04_1_exercise;
+
+/**
+ *
+ * @author Hp
+ */
+public class ShoppingCart {
+    public static void main(String[] args) {
+         // Declare and initialize String variables.  Do not initialize message yet.
+        String custName = "Jorge ", itemDesc = "loves the music";
+        String message;
+
+
+        // Assign the message variable 
+        message = custName + itemDesc;
+
+        // Print and run the code
+
+        System.out.println(message);
+    }
+}

src/main/java/jorgeantonio/exercices/ex04_2_exercise/ShoppingCart.java

@@ -0,0 +1,36 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex04_2_exercise;
+
+/**
+ *
+ * @author Hp
+ */
+public class ShoppingCart {
+     public static void main(String[] args) {
+        String custName = "Jorge";
+        String itemDesc = "Discs";
+        String message = custName+" bought "+itemDesc;
+        double price = 52.0 , tax = 5.2;
+        int quantity = 2;
+        double total;
+        // Declare and initialize numeric fields: price, tax, quantity, and total.   
+
+
+        // Modify message to include quantity 
+        message = custName + " bought " + quantity + " " + itemDesc;
+
+        System.out.println(message);
+
+        total = price * quantity * tax;
+
+
+        // Calculate total and then print the total cost
+
+        System.out.println("and they cost " + total);
+
+    } 
+}

src/main/java/jorgeantonio/exercices/ex05_1_exercise/ShoppingCart.java

@@ -0,0 +1,43 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex05_1_exercise;
+public class ShoppingCart {
+
+    public static void main(String[] args) {
+        String custName = "Mary Smith";
+        String itemDesc = "Shirt";
+
+	// numeric fields
+        double price = 21.99;
+        int quantity = 2;
+        double tax = 1.04;
+	double total;
+	String message = custName+" wants to purchase "+quantity+" "+itemDesc;
+
+	// Calculating total cost
+        total = (price*quantity)*tax;
+
+
+        // Declare outOfStock variable and initialize it
+        boolean outOfStock = true;
+
+        // Test quantity and modify message if quantity > 1.  
+         if(quantity > 1){
+             message = message +"s";
+         }
+
+        // Test outOfStock and notify user in either case.  
+
+        if(outOfStock == true){
+            System.out.println("The item unavailable");
+        }else{
+            System.out.println(message);
+            System.out.println("And the total is " + total);
+        }
+
+    }
+
+}

src/main/java/jorgeantonio/exercices/ex05_2_exercise/ShoppingCart.java

@@ -0,0 +1,35 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex05_2_exercise;
+
+/**
+ *
+ * @author Hp
+ */
+
+public class ShoppingCart {
+
+    public static void main(String[] args) {
+        // local variables
+        String custName = "Mary Smith";
+        String message = custName + " wants to purchase a several items.";
+
+        //Declare and initialize the items String array
+        String items [] = new String[]{"Shirt","Jeans","Shoes",""};
+
+
+
+        // Change message to show the number of items purchased.
+
+        message = "The items in total are " + items.length;
+
+        System.out.println(message);
+        // Print an element from the items array.  
+        System.out.print(items[0]+"\n");
+
+    }
+
+}

src/main/java/jorgeantonio/exercices/ex05_3_exercise/ShoppingCart.java

@@ -0,0 +1,35 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex05_3_exercise;
+
+public class ShoppingCart {
+
+    public static void main(String[] args) {
+        // local variables
+        String custName = "Mary Smith";
+        String message;
+        double price = 21.99;
+        int quantity = 2;
+        double tax = 1.04;
+
+        String items[];
+        items = new String[4];
+        items[0] = "Shirt";
+        items[1] = "Belt";
+        items[2] = "Scarf";
+        items[3] = "Skirt";
+
+        message = custName + " wants to purchase "+items.length+" items.";
+        System.out.println(message);
+
+        for (int i = 0; i < items.length; i++) {
+            System.out.println(items[i]);
+        }
+
+
+    }    
+}
+

src/main/java/jorgeantonio/exercices/ex06_1_exercise/Item.java

@@ -0,0 +1,17 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex06_1_exercise;
+
+/**
+ *
+ * @author Hp
+ */
+public class Item {
+    public int id;
+    public String descr;
+    public int quantity;
+    public double price;
+}

src/main/java/jorgeantonio/exercices/ex06_2_exercise/Item.java

@@ -0,0 +1,19 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex06_2_exercise;
+
+
+
+/**
+ *
+ * @author Hp
+ */
+public class Item {
+    public int itemId;
+    public String descr;
+    public int quantity;
+    public double price;
+}

src/main/java/jorgeantonio/exercices/ex06_2_exercise/ShoppingCart.java

@@ -0,0 +1,35 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex06_2_exercise;
+
+public class ShoppingCart {
+
+     public static void main(String args[]) {
+        // Declare and initialize 2 Item objects
+        Item item1 = new Item();
+        Item item2 = new Item();
+
+        item1.itemId = 1;
+        item1.descr = "Playera de Brasil";
+        item1.price = 500.00;
+        item1.quantity = 5;
+
+        item2.itemId = 1;
+        item2.descr = "Playera de Mexico";
+        item2.price = 1150.00;
+        item2.quantity = 5;
+
+	// Print both item descriptions and run code.
+        System.out.println("The first description is " + item1.descr + "\n"
+                           + "The second description is " + item2.descr);
+
+	item1 = item2;
+
+        System.out.println("The new description is " + item1.descr);
+
+     }
+
+} 

src/main/java/jorgeantonio/exercices/ex07_1_exercise/ShoppingCart.java

@@ -0,0 +1,24 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package ex07_1_exercise;
+
+public class ShoppingCart {
+    public static void main (String[] args){
+        String custName = "Steve Smith";
+        String firstName;
+        int spaceIdx;
+
+        // Get the index of the space character (" ") in custName. 
+        spaceIdx = custName.indexOf(" ");
+
+
+        // Use the substring method parse out the first name and print it.
+        firstName = custName.substring(0,spaceIdx);
+
+        System.out.println(firstName);
+
+    }
+}

src/main/java/jorgeantonio/exercices/ex08_1_exercise/Item.java

@@ -0,0 +1,18 @@
+
+package ex08_1_exercise;
+
+public class Item {
+    char color;
+
+    public boolean SetColor(char colorCode){
+        if(colorCode == ' '){
+            return false;
+        }else{
+            this.color = colorCode;
+            return true;
+        }
+
+    }
+
+
+}

src/main/java/jorgeantonio/exercices/ex08_1_exercise/ShoppingCart.java

@@ -0,0 +1,22 @@
+
+package ex08_1_exercise;
+
+public class ShoppingCart {
+    public static void main(String[] args){
+        Item item1 = new Item();
+        if(true == item1.SetColor('e')){
+            System.out.println("THE NEW COLOR IS " + item1.color);
+        }else{
+            System.out.println("INVALID COLOR");
+        }
+
+        // Call the setColor method on item1. Print the new color value from
+        //   item1 if the method returns true.  Otherwise print an "invalid color"
+	//   message.
+
+
+       // Test the class, using both valid and invalid colors.
+
+
+    }
+}

src/main/java/jorgeantonio/exercices/ex08_2_exercise/Item.java

@@ -0,0 +1,36 @@
+
+package ex08_2_exercise;
+
+
+public class Item {
+    String desc;
+    int quantity;
+    double price;
+    char colorCode = 'U';   //'U' = Undetermined
+
+    public void displayItem() {
+        System.out.println("Item: " + desc + ", " + quantity + ", "
+                + price + ", "+colorCode);
+    }
+
+    // Write a public 3-arg setItemDisplay method that returns void.
+    public void setItemFields(String desc, int quantity, double price){
+        this.desc = desc;
+        this.quantity = quantity;
+        this.price = price;
+    }
+    public int setItemFields(String desc, int quantity, double price,char colorCode){
+        if(colorCode == ' '){
+            return-1;
+        }else{
+            this.colorCode = colorCode;
+            setItemFields(desc, quantity, price);
+            return 1;
+        }
+    }
+
+    // Write a public 4-arg setItemDisplay method that returns an int.
+
+
+
+}