Anonymous Comparator

Author: JavaProgramTo.com

src/main/java/com/javaprogramto/java8/comparator/anonymous/AnonymousComparatorArrayExample.java

@@ -0,0 +1,36 @@
+package com.javaprogramto.java8.comparator.anonymous;
+
+import java.util.Arrays;
+import java.util.Comparator;
+
+public class AnonymousComparatorArrayExample {
+
+	public static void main(String[] args) {
+
+		String[] stringArray = new String[5];
+
+		stringArray[0] = "abc";
+		stringArray[1] = "mno";
+		stringArray[2] = "def";
+		stringArray[3] = "xyz";
+		stringArray[4] = "ghi";
+
+		System.out.println("Array before sorting - " + stringArray);
+
+		Arrays.sort(stringArray, new Comparator() {
+
+			@Override
+			public int compare(Object o1, Object o2) {
+
+				String str1 = (String) o1;
+				String str2 = (String) o2;
+				return str1.compareTo(str2);
+			}
+
+		});
+
+		System.out.println("Array after sorting with anonymous comparator - " + stringArray);
+
+	}
+
+}

src/main/java/com/javaprogramto/java8/comparator/anonymous/AnonymousComparatorListExample.java

@@ -0,0 +1,51 @@
+package com.javaprogramto.java8.comparator.anonymous;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+public class AnonymousComparatorListExample {
+
+	public static void main(String[] args) {
+
+		List<String> strings = new ArrayList<>();
+
+		strings.add("abc");
+		strings.add("mno");
+		strings.add("def");
+		strings.add("xyz");
+		strings.add("ghi");
+
+		System.out.println("List before sorting - " + strings);
+
+		Collections.sort(strings, new Comparator() {
+
+			@Override
+			public int compare(Object o1, Object o2) {
+
+				String str1 = (String) o1;
+				String str2 = (String) o2;
+				return str1.compareTo(str2);
+			}
+
+		});
+
+		System.out.println("List after sorting with anonymous comparator - " + strings);
+
+		Job job1 = new Job() {
+
+			@Override
+			public void post() {
+				System.out.println("Posting job 1 now");
+
+			}
+		};
+
+	}
+
+}
+
+interface Job {
+	void post();
+}