From 1c47a3ed5b9ee1a22680ffd0109380abb8b6fc07 Mon Sep 17 00:00:00 2001
From: hochraldo <mario.hochreiter@gmail.com>
Date: Tue, 13 May 2014 23:07:20 +0200
Subject: [PATCH] play with method references and lambdas

---
 .gitignore                                    |  1 +
 .../java/hochraldo/LambaMethodReference.java  | 37 +++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 src/main/java/hochraldo/LambaMethodReference.java

diff --git a/.gitignore b/.gitignore
index 32858aa..c6b7d1d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 *.class
+*.iml
 
 # Mobile Tools for Java (J2ME)
 .mtj.tmp/
diff --git a/src/main/java/hochraldo/LambaMethodReference.java b/src/main/java/hochraldo/LambaMethodReference.java
new file mode 100644
index 0000000..e138053
--- /dev/null
+++ b/src/main/java/hochraldo/LambaMethodReference.java
@@ -0,0 +1,37 @@
+package hochraldo;
+
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import java.util.function.Supplier;
+
+public class LambaMethodReference {
+
+
+    public static void main(String... args) {
+
+        // static method reference
+        Predicate<Object> nullCheck = Objects::nonNull;
+        System.out.println(nullCheck.test(null));
+        System.out.println(nullCheck.test(new Object()));
+
+        // constructor reference
+        Supplier<List<Integer>> listSupplier = ArrayList::new;
+        List<Integer> list1 = listSupplier.get();
+        list1.add(1);
+        System.out.println(list1);
+        List<Integer> list2 = listSupplier.get();
+        list2.add(2);
+        list2.add(3);
+        System.out.println(list2);
+
+        // method reference
+        String s = "Foo";
+        Function<Integer, Character> charAt = s::charAt;
+        System.out.println(charAt.apply(0));
+    }
+}
+