pratsgit
diff --git a/‎Capture 4.png‎
3.51 MB b/‎Capture 4.png‎
3.51 MB
diff --git a/‎Capture 5.png‎
3.36 MB b/‎Capture 5.png‎
3.36 MB
diff --git a/‎Capture 6.png‎
3.47 MB b/‎Capture 6.png‎
3.47 MB
diff --git a/‎Capture 7.png‎
3.34 MB b/‎Capture 7.png‎
3.34 MB
diff --git a/‎pom.xml‎
Lines changed: 2 additions & 2 deletions b/‎pom.xml‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎src/main/java/students2/School.java‎
Lines changed: 27 additions & 5 deletions b/‎src/main/java/students2/School.java‎
Lines changed: 27 additions & 5 deletions
diff --git a/‎src/main/java/students2/Student.java‎
Lines changed: 2 additions & 1 deletion b/‎src/main/java/students2/Student.java‎
Lines changed: 2 additions & 1 deletion
@@ -9,8 +9,8 @@
     <version>1.0-SNAPSHOT</version>
 
     <properties>
-        <maven.compiler.source>16</maven.compiler.source>
-        <maven.compiler.target>16</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
     </properties>
 
 </project>
@@ -4,19 +4,37 @@
 
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 interface Criterion<E> {
   boolean test(E s);
 }
 
+interface Something<E> {
+  void doSomething(E e);
+}
+
+class PrintSomething implements Something<Student> {
+  @Override
+  public void doSomething(Student student) {
+    System.out.println("> " + student);
+  }
+}
+
 public class School {
-  public static <E> void showAll(List<E> ls) {
+//  public static <E> void showAll(Iterable<E> ls) {
+//    for (E s : ls) {
+//      System.out.println("> " + s);
+//    }
+//    System.out.println("---------------------------");
+//  }
+  public static <E> void withEvery(Iterable<E> ls, Something<E> someObject) {
     for (E s : ls) {
-      System.out.println("> " + s);
+      someObject.doSomething(s);
     }
-    System.out.println("---------------------------");
   }
+
   public static <E> List<E> getByCriterion(Iterable<E> ls, Criterion<E> crit) {
     List<E> res = new ArrayList<>();
     for (E s : ls) {
@@ -34,15 +52,19 @@ public static void main(String[] args) {
         Student.of("Sheila", 3.9, "Math", "Physics", "Quantum Mechanics", "Astrophysics")
     );
 
-    showAll(roster);
+    withEvery(roster, x -> System.out.println("> " + x));
+//    withEvery(roster, (Student student) -> {
+//      System.out.println("> " + student);
+//    });
 
     // show smart students
 //    showAll(getByCriterion(roster, ???));
 
     // show unenthusiastic students
 //    showAll(getByCriterion(roster, ???));
 
-    List<String> names = List.of("Alex", "James", "Fred", "Susan", "Bill");
+//    List<String> names = List.of("Alex", "James", "Fred", "Susan", "Bill");
+    List<String> names = Arrays.asList("Alex", "James", "Fred", "Susan", "Bill");
 
     // show long names
 //    showAll(getByCriterion(names, ???));
 
@@ -20,7 +20,8 @@ private Student(String name, double gpa, String ... courses) {
     if (!isValidStudent(name, gpa)) throw new IllegalArgumentException();
     this.name = name;
     this.gpa = gpa;
-    this.courses = List.of(courses);
+//    this.courses = List.of(courses);
+    this.courses = Arrays.asList(courses);
   }
 
   public static boolean isValidStudent(String name, double gpa) {
Original file line number	Diff line number	Diff line change
`@@ -20,7 +20,8 @@ private Student(String name, double gpa, String ... courses) {`
`20`	`20`	`if (!isValidStudent(name, gpa)) throw new IllegalArgumentException();`
`21`	`21`	`this.name = name;`
`22`	`22`	`this.gpa = gpa;`
`23`		`- this.courses = List.of(courses);`
	`23`	`+// this.courses = List.of(courses);`
	`24`	`+ this.courses = Arrays.asList(courses);`
`24`	`25`	`}`
`25`	`26`
`26`	`27`	`public static boolean isValidStudent(String name, double gpa) {`