Tutorial 9

T9Q1-A/T9Q1-A.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q1-A/src/Main.java

@@ -0,0 +1,18 @@
+public class Main {
+    public static <T> void printArray(T[] array) {
+        for (T element : array) {
+            System.out.print(element + " ");
+        }
+        System.out.println();
+    }
+
+    public static void main(String[] args) {
+        Integer[] intArray = {1, 2, 3, 4, 5};
+        String[] strArray = {"Hello", "World"};
+        Double[] doubleArray = {1.0, 2.0, 3.0, 4.0, 5.0};
+
+        printArray(intArray);
+        printArray(strArray);
+        printArray(doubleArray);
+    }
+}

T9Q1-B/T9Q1-B.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q1-B/src/Main.java

@@ -0,0 +1,22 @@
+public class Main {
+    public static <T> void printArray(T[] array) {
+        for (T element : array) {
+            System.out.print(element + " ");
+        }
+        System.out.println();
+    }
+
+    public static void main(String[] args) {
+        Integer[] intArray = {1, 2, 3, 4, 5};
+        String[] strArray = {"Hello", "World"};
+        Double[] doubleArray = {1.0, 2.0, 3.0, 4.0, 5.0};
+        int[] intpArray = {1, 2, 3, 4, 5};
+        double[] doublepArray = {1, 2, 3, 4, 5};
+
+        printArray(intArray);
+        printArray(strArray);
+        printArray(doubleArray);
+        printArray(intpArray);
+        printArray(doublepArray);
+    }
+}

T9Q1-C/T9Q1-C.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q1-C/src/Main.java

@@ -0,0 +1,36 @@
+public class Main {
+    public static <T> void printArray(T[] array) {
+        for (T element : array) {
+            System.out.print(element + " ");
+        }
+        System.out.println();
+    }
+
+    public static void printArray(int[] array) {
+        for (int element : array) {
+            System.out.print(element + " ");
+        }
+        System.out.println();
+    }
+
+    public static void printArray(double[] array) {
+        for (double element : array) {
+            System.out.print(element + " ");
+        }
+        System.out.println();
+    }
+
+    public static void main(String[] args) {
+        Integer[] intArray = {1, 2, 3, 4, 5};
+        String[] strArray = {"Hello", "World"};
+        Double[] doubleArray = {1.0, 2.0, 3.0, 4.0, 5.0};
+        int[] intpArray = {1, 2, 3, 4, 5};
+        double[] doublepArray = {1, 2, 3, 4, 5};
+
+        printArray(intArray);
+        printArray(strArray);
+        printArray(doubleArray);
+        printArray(intpArray);
+        printArray(doublepArray);
+    }
+}

T9Q2-A/T9Q2-A.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q2-A/src/Main.java

@@ -0,0 +1,21 @@
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class Main {
+    public static void main(String[] args) {
+        List<Integer> numbers = Arrays.asList(10, 9, 8, 7, 6, 5, 4, 3, 2, 1);
+
+        // Sort in descending order
+        Collections.sort(numbers, Collections.reverseOrder());
+        System.out.println("Sorted in descending order: " + numbers);
+
+        // Shuffle the list
+        Collections.shuffle(numbers);
+        System.out.println("Shuffled list: " + numbers);
+
+        // Find max and min
+        System.out.println("Max: " + Collections.max(numbers));
+        System.out.println("Min: " + Collections.min(numbers));
+    }
+}

T9Q2-B/T9Q2-B.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q2-B/src/Main.java

@@ -0,0 +1,23 @@
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class Main {
+    public static void main(String[] args) {
+        List<Integer> numbers = Arrays.asList();
+
+        // Sort in descending order
+        Collections.sort(numbers, Collections.reverseOrder());
+        System.out.println("Sorted in descending order: " + numbers);
+
+        // Shuffle the list
+        Collections.shuffle(numbers);
+        System.out.println("Shuffled list: " + numbers);
+
+        numbers = Arrays.asList(null);
+
+        // Find max and min
+        System.out.println("Max: " + Collections.max(numbers));
+        System.out.println("Min: " + Collections.min(numbers));
+    }
+}

T9Q3-A/T9Q3-A.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q3-A/src/Main.java

@@ -0,0 +1,16 @@
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Main {
+    public static void main(String[] args) {
+        List<String> words = Arrays.asList("Apple", "Banana", "Kiwi", "Orange", "Pear");
+
+        List<String> result = words.stream()
+            .filter(s -> s.length() >= 5) // Filter strings with length >= 5
+            .map(String::toUpperCase) // Convert to uppercase
+            .collect(Collectors.toList()); // Collect into a list
+
+        System.out.println(result);
+    }
+}

T9Q3-B/T9Q3-B.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q3-B/src/Main.java

@@ -0,0 +1,22 @@
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Main {
+    public static void main(String[] args) {
+        List<String> words = Arrays.asList("Apple", "Banana", "Kiwi", "Orange", "Pear");
+
+        List<String> result = words.stream()
+                .filter(s -> s.length() >= 5) // Filter strings with length >= 5
+                .map(String::toUpperCase) // Convert to uppercase
+                .collect(Collectors.toList()); // Collect into a list
+
+        System.out.println(result);
+
+        long count = words.stream()
+                .filter(s -> s.length() >= 5)
+                .count();
+
+        System.out.println("Count: " + count);
+    }
+}

T9Q4/T9Q4.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q4/src/Main.java

@@ -0,0 +1,6 @@
+public class Main {
+    public static void main(String[] args) {
+        Runnable r = () -> System.out.println("Hello, World");
+        r.run();
+    }
+}

T9Q5/T9Q5.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q5/src/Main.java

@@ -0,0 +1,14 @@
+public class Main {
+    public static void main(String[] args) {
+        int[] numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        int sum = 0;
+
+        for (int num : numbers) {
+            if (num % 2 == 0) {
+                sum += num;
+            }
+        }
+
+        System.out.println("Sum of even numbers: " + sum);
+    }
+}

T9Q6-B/T9Q6-B.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q6-B/src/Main.java

@@ -0,0 +1,28 @@
+interface Vehicle {
+    default void start() {
+        System.out.println("Vehicle started.");
+    }
+}
+
+interface Car {
+    default void start() {
+        System.out.println("Car started.");
+    }
+}
+
+class Jeep implements Car, Vehicle {
+    @Override
+    public void start() {
+        Car.super.start(); // or Vehicle.super.start()
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        Vehicle jeep1 = new Jeep();
+        jeep1.start();
+
+        Car jeep2 = new Jeep();
+        jeep2.start();
+    }
+}

T9Q6/T9Q6.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q6/src/Main.java

@@ -0,0 +1,19 @@
+interface Vehicle {
+    default void start() {
+        System.out.println("Vehicle started.");
+    }
+}
+
+class Car implements Vehicle {
+    @Override
+    public void start() {
+        System.out.println("Car started.");
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        Vehicle car = new Car();
+        car.start();
+    }
+}

T9Q7/T9Q7.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T9Q7/src/Main.java

@@ -0,0 +1,12 @@
+public class Main {
+    public static void main(String[] args) {
+        int day = 3;
+        String dayType = switch(day) {
+            case 1, 2, 3, 4, 5 -> "Weekday";
+            case 6, 7 -> "Weekend";
+            default -> "Invalid day";
+        };
+
+        System.out.println(dayType);
+    }
+}