java8feature: updated stream api code.

mohammad2java · mohammad2java · commit eaa458f46fdd · 2019-05-30T17:17:57.000+05:30
diff --git a/src/main/java/com/amir/api/StreamApi.java b/src/main/java/com/amir/api/StreamApi.java
@@ -1,7 +1,10 @@
 package com.amir.api;
 
 import java.util.Arrays;
+import java.util.Comparator;
 import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
 
 public class StreamApi {
 	
@@ -10,11 +13,30 @@ public static void main(String[] args) {
 		
 		List<String> nameList = Arrays.asList("rizvi","amir","fema");
 		System.out.println(nameList);
+		
 		//iterating by function interface.
-		nameList.forEach(name->System.out.println(name));
-		//sorting by function interface.
-		nameList.sort((first,second)->{return first.compareTo(second);});
-		System.out.println(nameList);
+		//nameList.forEach(name->System.out.println(name));
+		
+		//sorting by function interface.(Comparator)
+		//nameList.sort((first,second)->{return first.compareTo(second);});
+		//System.out.println(nameList);
+		
+		//filtering using Predicate function interface.
+		Predicate<String> pre = name-> {return name.contains("m");};
+		List<String> filterName = nameList.stream().filter(pre).collect(Collectors.toList());
+		System.out.println(filterName);
+		
+		//sorted using sorted method of stream.
+		List<String> sortedList = nameList.stream().sorted().collect(Collectors.toList());
+		System.out.println(sortedList);
+		List<String> sortedListUsingComparator = nameList.stream()
+				.sorted((name1,name2)->name2.compareTo(name1))
+				.collect(Collectors.toList());
+		System.out.println(sortedListUsingComparator);
+	
+		System.out.println("OriginalList"+nameList);
+		
+				
 	}
 
 }
