add lambda demo

CodeCoderCoding · CodeCoderCoding · commit b1a744bcaf77 · 2023-01-19T18:13:46.000+08:00
diff --git a/src/FDynamic/Lambda/LambdaDemo.java b/src/FDynamic/Lambda/LambdaDemo.java
@@ -0,0 +1,16 @@
+package FDynamic.Lambda;
+
+import java.util.Arrays;
+
+public class LambdaDemo {
+    public static void main(String[] args) {
+        String[] stringArray=new String[] {"C", "BB", "A", "DD"};
+        System.out.println(Arrays.toString(stringArray));
+        Arrays.sort(stringArray);
+        System.out.println("根据字典排序"+Arrays.toString(stringArray));
+        Arrays.sort(stringArray, new LengthComparator());
+        System.out.println("根据长度排序的结果(LengthComparator)："+Arrays.toString(stringArray));
+        Arrays.sort(stringArray, (first,second) -> first.length()-second.length());
+        System.out.println("根据长度排序的结果(Lambda)："+Arrays.toString(stringArray));
+    }
+}
diff --git a/src/FDynamic/Lambda/LengthComparator.java b/src/FDynamic/Lambda/LengthComparator.java
@@ -0,0 +1,11 @@
+package FDynamic.Lambda;
+
+import java.util.Comparator;
+
+public class LengthComparator implements Comparator<String> {
+
+    public int compare(String first, String second){
+        return first.length() - second.length();
+    }
+
+}
