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init java in thinking
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‎.gitignore

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*.swp
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*.swo
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*.metadata/*
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*.RemoteSystemsTempFiles/*
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*.recommenders/
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*/bin/*
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*.classpath
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*.project
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*/.settings/*
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‎JavaInThinking/src/com/chapter05/ArrayClassObj.java

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package com.chapter05;
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import java.util.Arrays;
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import java.util.Random;
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public class ArrayClassObj {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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Random rand = new Random(47);
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Integer[] a1 = new Integer[rand.nextInt(20)];
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for(int i = 0; i < a1.length; i++) {
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a1[i] = rand.nextInt(500);
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}
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System.out.println(Arrays.toString(a1));
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Integer[] a2 = new Integer[]{
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new Integer(1),
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new Integer(2),
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3,
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};
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System.out.println(Arrays.toString(a2));
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}
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}

‎JavaInThinking/src/com/chapter05/ArrayNew.java

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package com.chapter05;
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import java.util.Arrays;
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import java.util.Random;
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public class ArrayNew {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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Random rand = new Random(47);
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int[] a1 = new int[rand.nextInt(20)];
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System.out.println(Arrays.toString(a1));
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}
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}

‎JavaInThinking/src/com/chapter05/ArraysOfPrimitives.java

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package com.chapter05;
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public class ArraysOfPrimitives {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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int[] a1 = {1, 2, 3, 4, 5};
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int[] a2;
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a2 = a1;
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for(int i=0; i<a2.length; i++) {
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a1[i] = a1[i] + 3;
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}
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for(int i=0; i<a1.length; i++) {
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System.out.println(a1[i]);
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}
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}
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}

‎JavaInThinking/src/com/chapter05/DynaticArray.java

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package com.chapter05;
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public class DynaticArray {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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Other.main(new String[]{"hello", "fine", "ok"});
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}
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}
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class Other{
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public static void main(String[] args) {
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for(String s: args) {
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System.out.println(s);
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}
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}
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}

‎JavaInThinking/src/com/concurrency21/BasicThreads.java

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//: concurrentcy/BasicThreads
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// The most basic use of the Thread class
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package com.concurrency21;
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public class BasicThreads {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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Thread t = new Thread(new LiftOff());
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t.start();
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System.out.println("Waiting for LiftOff");
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}
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}

‎JavaInThinking/src/com/concurrency21/CachedThreadPool.java

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//: concurrency/CachedThreadPool
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package com.concurrency21;
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import java.util.concurrent.*;
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public class CachedThreadPool {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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ExecutorService exec = Executors.newCachedThreadPool();
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for(int i = 0; i < 5; i++)
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exec.execute(new LiftOff());
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exec.shutdown();
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}
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}

‎JavaInThinking/src/com/concurrency21/CallableDemo.java

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//: concunrrency/CallableDemo.java
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package com.concurrency21;
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import java.util.concurrent.*;
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import java.util.*;
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class TaskWithResult implements Callable{
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private int id;
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public TaskWithResult(int id) {
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this.id = id;
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}
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@Override
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public String call() throws Exception {
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// TODO Auto-generated method stub
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return "Result of TaskWithResult " + this.id;
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}
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}
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public class CallableDemo {
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public static void main(String args[]) {
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ExecutorService exec = Executors.newCachedThreadPool();
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ArrayList<Future<String>> results = new ArrayList<Future<String>>();
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for(int i = 0; i < 10; i++) {
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results.add(exec.submit(new TaskWithResult(i)));
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}
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for(Future<String> fs : results) {
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try{
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System.out.println(fs.get());
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} catch(InterruptedException e) {
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System.out.println(e);
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return;
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} catch(ExecutionException e) {
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System.out.println(e);
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return;
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} finally {
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exec.shutdown();
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}
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}
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}
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}

‎JavaInThinking/src/com/concurrency21/FixedThreadPool.java

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//: concurrency/FixedThreadPool.java
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package com.concurrency21;
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import java.util.concurrent.*;
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public class FixedThreadPool {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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ExecutorService exec = Executors.newFixedThreadPool(5);
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for(int i = 0; i < 5; i++)
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exec.execute(new LiftOff());
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exec.shutdown();
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}
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}

‎JavaInThinking/src/com/concurrency21/LiftOff.java

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package com.concurrency21;
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public class LiftOff implements Runnable {
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protected int countDown = 10;
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private static int taskCount = 0;
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private final int id = taskCount++;
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public LiftOff() {}
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public LiftOff(int countDown) {
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this.countDown = countDown;
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}
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public String status() {
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return "#" + id + "(" + (countDown > 0? countDown : "Liftoff!") + "). ";
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}
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public void run() {
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while(countDown-- > 0) {
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System.out.print(status());
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//Thread.yield();
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}
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}
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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}
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}

‎JavaInThinking/src/com/concurrency21/MainThread.java

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package com.concurrency21;
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public class MainThread {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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LiftOff launch = new LiftOff();
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launch.run();
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}
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}

‎JavaInThinking/src/com/concurrency21/MoreBasicThreads.java

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//: concurrency/MoreBasicThreads.java
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// Adding more threads
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package com.concurrency21;
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public class MoreBasicThreads {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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for(int i = 0; i < 5; i++) {
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new Thread(new LiftOff()).start();
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}
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System.out.println("Waiting for LiftOff");
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}
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}

‎JavaInThinking/src/com/concurrency21/SimplePriorities.java

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//: concurrency/SimplePriorities.java
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package com.concurrency21;
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import java.util.concurrent.*;
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public class SimplePriorities implements Runnable {
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private int countDown = 5;
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private volatile double d; // No optimization
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private int priority;
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public SimplePriorities(int priority) {
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this.priority = priority;
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}
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public String toString() {
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return Thread.currentThread() + ":" + countDown;
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}
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public void run() {
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Thread.currentThread().setPriority(this.priority);
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while(true) {
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for(int i = 1; i < 100000000; i++) {
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d += (Math.PI + Math.E) / (double) i;
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if(i % 1000 == 0) {
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Thread.yield();
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}
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}
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System.out.println(this);
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if(--countDown == 0) return;
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}
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}
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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ExecutorService exec = Executors.newCachedThreadPool();
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exec.execute(new SimplePriorities(Thread.MAX_PRIORITY));
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for(int i = 0; i < 5; i++) {
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exec.execute(new SimplePriorities(Thread.MIN_PRIORITY));
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}
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exec.shutdown();
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}
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}

‎JavaInThinking/src/com/concurrency21/SingleThreadExecutor.java

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//: concurrency/SingleThreadExecutor.java
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package com.concurrency21;
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import java.util.concurrent.*;
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public class SingleThreadExecutor {
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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ExecutorService exec = Executors.newSingleThreadExecutor();
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for(int i = 0; i < 5; i++)
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exec.execute(new LiftOff());
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exec.shutdown();
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}
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}

‎JavaInThinking/src/com/concurrency21/SleepingTask.java

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//: concurrency/SleepingTask.java
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package com.concurrency21;
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import java.util.concurrent.*;
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public class SleepingTask extends LiftOff{
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public void run() {
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try {
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while(countDown-- > 0) {
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System.out.println(status());
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TimeUnit.MILLISECONDS.sleep(1000);
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}
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} catch (InterruptedException e) {
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System.err.println("Interrupt");
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}
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}
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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ExecutorService exec = Executors.newCachedThreadPool();
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for(int i = 0; i < 5; i++) {
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exec.execute(new SleepingTask());
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}
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}
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}

‎JavaInThinking/src/com/interface09/Adventure.java

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//: interfaces/Adventure.java
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// Multiple interfaces
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package com.interface09;
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interface CanFlight {
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void flight();
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}
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interface CanSwim {
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void swim();
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}
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interface CanFly {
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void fly();
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}
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class ActionCharactor {
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public void flight() {}
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}
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class Hero extends ActionCharactor
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implements CanFlight, CanSwim, CanFly {
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public void fly() {}
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public void swim() {}
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}
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public class Adventure {
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public static void t(CanFlight x) { x.flight(); }
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public static void u(CanSwim x) { x.swim(); }
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public static void v(CanFly x) { x.fly(); }
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public static void w(ActionCharactor x) { x.flight(); }
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public static void main(String[] args) {
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Hero h = new Hero();
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t(h);
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u(h);
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v(h);
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w(h);
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}
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}

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