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demo1/src/test/java/cn/freemud/demo/Test.java

+/**
+ * Copyright (C), 2015-2018, 非码网络科技有限公司
+ * FileName: Test
+ * Author:   bing.liu
+ * Date:     2018-11-01 17:59
+ * Description:
+ */
+package cn.freemud.demo;
+
+import java.io.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedList;
+
+/**
+ * @author bing.liu
+ * @create 2018-11-01
+ * @versions 1.0.0
+ */
+
+public class Test {
+    private static int len = 5;
+    private static String IOtext1 = "io content-one";
+    private static String IOtext2 = "io content-tow";
+    @org.junit.Test
+    public void test1() throws IOException, InterruptedException {
+
+        mainAction();
+    }
+
+    public static void mainAction() throws IOException, InterruptedException {
+        HashMapAction();
+        ArrayListAction();
+        LinkedListAction();
+        IOAction();
+
+        new ThreadDemo("Thread-one").start();
+        new ThreadDemo("Thread-two").start();
+
+        Thread.sleep(1000);
+
+        new RunnableDemo("Runnable-one").start();
+        new RunnableDemo("Runnable-two").start();
+    }
+
+    public static void HashMapAction() {
+        HashMap<Integer, String> hashMap = new HashMap();
+        for (int i = 0; i < len; i++) {
+            hashMap.put(i, "hashMapValue".concat(String.valueOf(i)));
+        }
+        hashMap.forEach((k, v) -> System.out.println("hashMap Key:".concat(k.toString()).concat(",values:").concat(v)));
+        System.out.println();
+    }
+
+    public static void ArrayListAction() {
+        ArrayList arrayList = new ArrayList();
+        for (int i = 0; i < len; i++) {
+            arrayList.add("arrayList".concat(String.valueOf(i)));
+        }
+        arrayList.forEach((k) -> System.out.println("arrayList content:".concat(k.toString())));
+        System.out.println();
+    }
+
+    public static void LinkedListAction() {
+        LinkedList linkedList = new LinkedList();
+        for (int i = 0; i < len; i++) {
+            linkedList.add("linkedList".concat(String.valueOf(i)));
+        }
+        linkedList.forEach((k) -> System.out.println("linkedList content:".concat(k.toString())));
+        System.out.println();
+    }
+
+    public static void IOAction() throws IOException {
+        FileOutputStream fos = new FileOutputStream("D:\\FileOutputStream.txt");
+        fos.write(IOtext1.getBytes("UTF-8"));
+        fos.close();
+
+        FileInputStream fr = new FileInputStream("D:\\FileOutputStream.txt");
+        byte[] buf = new byte[1024];
+        int len;
+        String myStr = "";
+        while ((len = fr.read(buf)) != -1) {
+            myStr += new String(buf, 0, len, "UTF-8");
+        }
+        System.out.println(myStr);
+
+        FileWriter fw = new FileWriter("D:\\FileWriter.txt");
+        fw.write(IOtext2);
+        fw.close();
+
+        FileReader fr2 = new FileReader("D:\\FileWriter.txt");
+        char[] buf2 = new char[1024];
+        int len2 = fr2.read(buf2);
+        String myStr2 = new String(buf2, 0, len2);
+        System.out.println(myStr2);
+
+        System.out.println();
+    }
+
+
+    static class RunnableDemo implements Runnable {
+        private Thread t;
+        private String threadName;
+
+        RunnableDemo(String name) {
+            threadName = name;
+        }
+
+        public void run() {
+            System.out.println("Run " + threadName);
+            try {
+                for (int i = 0; i < 4; i++) {
+                    System.out.println("Thread: " + threadName + ", " + i);
+                    Thread.sleep(50);
+                }
+            } catch (InterruptedException e) {
+                System.out.println("Thread " + threadName + " interrupted.");
+            }
+            System.out.println("Thread " + threadName + " esc.");
+            System.out.println();
+        }
+
+        public void start() {
+            System.out.println("Star " + threadName);
+            if (t == null) {
+                t = new Thread(this, threadName);
+                t.start();
+            }
+        }
+    }
+
+    static class ThreadDemo extends Thread {
+        private Thread t;
+        private String threadName;
+
+        ThreadDemo(String name) {
+            threadName = name;
+        }
+
+        public void run() {
+            System.out.println("Run " + threadName);
+            try {
+                for (int i = 0; i < 4; i++) {
+                    System.out.println("Thread: " + threadName + ", " + i);
+                    Thread.sleep(50);
+                }
+            } catch (InterruptedException e) {
+                System.out.println("Thread " + threadName + " interrupted.");
+            }
+            System.out.println("Thread " + threadName + " esc.");
+            System.out.println();
+        }
+
+        public void start() {
+            System.out.println("Star " + threadName);
+            if (t == null) {
+                t = new Thread(this, threadName);
+                t.start();
+            }
+        }
+    }
+}