重构模块

Author: enjoyCoding666

src/main/java/com/bean/Worker.java

@@ -0,0 +1,44 @@
+package com.bean;
+
+/**
+ * @Author: EnjoyCoding
+ * @Date: 2020\1\20 0020 20:42
+ * @Description:
+ */
+public class Worker {
+    private String id;
+
+    private Integer age;
+
+    private String name;
+
+    public Worker(String id, Integer age, String name) {
+        this.id = id;
+        this.age = age;
+        this.name = name;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public Integer getAge() {
+        return age;
+    }
+
+    public void setAge(Integer age) {
+        this.age = age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

src/main/java/com/collection/ListOperation.java

@@ -12,16 +12,16 @@ public class ListOperation {
     /**
      * 遍历List
      */
-    public  void ergodic(List<String> list){
-          for(String str : list) {
-              System.out.println(str);
+    public static void ergodic(List<?> list){
+          for(Object o: list) {
+              System.out.println(o);
           }
     }
 
     /**
      * 通过Iterator遍历
      */
-    public void ergodicByIterator(List<String> list){
+    public static void ergodicByIterator(List<String> list){
         //创建集合的迭代器
         Iterator<String> iterator=list.iterator();
         //hasNext()检验是否还有下一个.

src/main/java/com/lambda/LambdaForeach.java renamed to src/main/java/com/java8/lambda/LambdaForeach.java

@@ -1,4 +1,4 @@
-package com.lambda;
+package com.java8.lambda;
 
 import java.util.Arrays;
 import java.util.List;

src/main/java/com/lambda/LambdaForeach2.java renamed to src/main/java/com/java8/lambda/LambdaForeach2.java

@@ -1,4 +1,4 @@
-package com.lambda;
+package com.java8.lambda;
 
 import java.util.Arrays;
 import java.util.List;

src/main/java/com/lambda/LambdaRunnable.java renamed to src/main/java/com/java8/lambda/LambdaRunnable.java

@@ -1,4 +1,4 @@
-package com.lambda;
+package com.java8.lambda;
 
 public class LambdaRunnable {
     public static void main(String[] args) {

src/main/java/com/lambda/LambdaSort.java renamed to src/main/java/com/java8/lambda/LambdaSort.java

@@ -1,7 +1,6 @@
-package com.lambda;
+package com.java8.lambda;
 
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Comparator;
 
 public class LambdaSort {

src/main/java/com/lambda/LambdaThread.java renamed to src/main/java/com/java8/lambda/LambdaThread.java

@@ -1,4 +1,4 @@
-package com.lambda;
+package com.java8.lambda;
 
 public class LambdaThread {
     public static void main(String[] args) {

src/main/java/com/java8/stream/ReduceTest.java

@@ -0,0 +1,47 @@
+package com.java8.stream;
+
+import java.util.Arrays;
+import java.util.Optional;
+import java.util.stream.Stream;
+
+/**
+ * @Author: EnjoyCoding
+ * @Date: 2020\1\20 0020 21:03
+ * @Description:
+ */
+public class ReduceTest {
+
+
+    public void testReduce() {
+        Stream<Integer> stream = Arrays.stream(new Integer[]{1, 2, 3, 4, 5, 6, 7, 8});
+
+        //求集合元素只和
+        Integer result = stream.reduce(0, Integer::sum);
+        System.out.println(result);
+
+        stream = Arrays.stream(new Integer[]{1, 2, 3, 4, 5, 6, 7});
+
+        //求和
+        stream.reduce((i, j) -> i + j).ifPresent(System.out::println);
+
+
+        stream = Arrays.stream(new Integer[]{1, 2, 3, 4, 5, 6, 7});
+        //求最大值
+        stream.reduce(Integer::max).ifPresent(System.out::println);
+
+        stream = Arrays.stream(new Integer[]{1, 2, 3, 4, 5, 6, 7});
+        //求最小值
+        stream.reduce(Integer::min).ifPresent(System.out::println);
+
+        stream = Arrays.stream(new Integer[]{1, 2, 3, 4, 5, 6, 7});
+        //做逻辑
+        stream.reduce((i, j) -> i > j ? j : i).ifPresent(System.out::println);
+
+        stream = Arrays.stream(new Integer[]{1, 2, 3, 4, 5, 6, 7});
+
+        //求逻辑求乘机
+        int result2 = stream.filter(i -> i % 2 == 0).reduce(1, (i, j) -> i * j);
+
+        Optional.of(result2).ifPresent(System.out::println);
+    }
+}

src/main/java/com/java8/stream/StreamCollectorTest.java

@@ -0,0 +1,26 @@
+package com.java8.stream;
+
+import com.collection.ListOperation;
+import org.apache.commons.lang.StringUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * @Author: EnjoyCoding
+ * @Date: 2020\3\4 0004 22:36
+ * @Description:
+ */
+public class StreamCollectorTest {
+
+	public static void listStringtoInteger() {
+		List<String> strList=new ArrayList<>();
+		strList.add("1");
+		strList.add("2");
+		strList.add("abc");
+		//将list转化为流，然后过滤掉非数字的字符串，再将字符串转化为数字，最后转化回list。
+		List<Integer> integerList = strList.stream().filter(StringUtils::isNumeric).map(Integer::valueOf).collect(Collectors.toList());
+		integerList.forEach(System.out::println);
+	}
+}

src/main/java/com/lambda/StreamMap.java renamed to src/main/java/com/java8/stream/StreamMap.java

@@ -1,4 +1,4 @@
-package com.lambda;
+package com.java8.stream;
 
 import java.util.Arrays;
 import java.util.List;