Added sort() using Comparator in Stream Operation

spdpiyush · spdpiyush · commit d1d97d189547 · 2025-02-26T14:19:42.000+05:30
diff --git a/Modern-Java-Examples/src/com/learn/streams/StreamsComparatorExample.java b/Modern-Java-Examples/src/com/learn/streams/StreamsComparatorExample.java
@@ -0,0 +1,45 @@
+package com.learn.streams;
+
+import com.learn.data.Student;
+import com.learn.data.StudentDataBase;
+
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class StreamsComparatorExample {
+
+    public static void main(String[] args) {
+
+        sortStudentsByName().forEach(System.out::println);
+
+        sortStudentsByGpa().forEach(System.out::println);
+
+    }
+
+    /**
+     * <p>
+     *     Students need to be sorted by their name
+     * </p>
+     */
+    public static List<Student> sortStudentsByName() {
+        System.out.println("Sorted by Name:");
+        return StudentDataBase.getAllStudents().stream()
+                .sorted(Comparator.comparing(Student::getName))
+                .collect(Collectors.toList());
+    }
+
+    /**
+     * <p>
+     *     Sort the Students by their GPA in Decreasing Order.
+     *     used reversed() to reverse the result and return the Collection.
+     * </p>
+     * @return
+     */
+    public static List<Student> sortStudentsByGpa() {
+        System.out.println("Sorted By Gpa: ");
+        return StudentDataBase.getAllStudents().stream()
+                .sorted(Comparator.comparing(Student::getGpa).reversed())
+                .collect(Collectors.toList());
+    }
+}
diff --git a/README.md b/README.md
@@ -28,6 +28,7 @@ This repository contains the basic &amp; advance level examples related to Java
     * [map()](Modern-Java-Examples/src/com/learn/streams/StreamsMapExample.java)
     * [flatMap()](Modern-Java-Examples/src/com/learn/streams/StreamsFlatMapExample.java)
     * [distinct(), count() and sorted()](Modern-Java-Examples/src/com/learn/streams/StreamsFlatMapExample.java)
+    * [sort() using Comparator](Modern-Java-Examples/src/com/learn/streams/StreamsComparatorExample.java)
 
 
 
