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Commit179e12f

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init java in thinking
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63 files changed

+1988
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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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packagecom.chapter05;
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importjava.util.Arrays;
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importjava.util.Random;
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publicclassArrayClassObj {
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publicstaticvoidmain(String[]args) {
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// TODO Auto-generated method stub
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Randomrand =newRandom(47);
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Integer[]a1 =newInteger[rand.nextInt(20)];
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for(inti =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 =newInteger[]{
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newInteger(1),
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newInteger(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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}
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packagecom.chapter05;
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importjava.util.Arrays;
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importjava.util.Random;
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publicclassArrayNew {
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publicstaticvoidmain(String[]args) {
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// TODO Auto-generated method stub
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Randomrand =newRandom(47);
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int[]a1 =newint[rand.nextInt(20)];
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System.out.println(Arrays.toString(a1));
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}
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}
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packagecom.chapter05;
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publicclassArraysOfPrimitives {
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publicstaticvoidmain(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(inti=0;i<a2.length;i++) {
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a1[i] =a1[i] +3;
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}
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for(inti=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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}
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packagecom.chapter05;
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publicclassDynaticArray {
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publicstaticvoidmain(String[]args) {
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// TODO Auto-generated method stub
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Other.main(newString[]{"hello","fine","ok"});
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}
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}
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classOther{
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publicstaticvoidmain(String[]args) {
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for(Strings:args) {
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System.out.println(s);
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}
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}
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}
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//: concurrentcy/BasicThreads
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// The most basic use of the Thread class
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packagecom.concurrency21;
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publicclassBasicThreads {
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publicstaticvoidmain(String[]args) {
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// TODO Auto-generated method stub
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Threadt =newThread(newLiftOff());
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t.start();
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System.out.println("Waiting for LiftOff");
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}
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}
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//: concurrency/CachedThreadPool
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packagecom.concurrency21;
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importjava.util.concurrent.*;
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publicclassCachedThreadPool {
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publicstaticvoidmain(String[]args) {
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// TODO Auto-generated method stub
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ExecutorServiceexec =Executors.newCachedThreadPool();
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for(inti =0;i <5;i++)
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exec.execute(newLiftOff());
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exec.shutdown();
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}
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}
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//: concunrrency/CallableDemo.java
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packagecom.concurrency21;
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importjava.util.concurrent.*;
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importjava.util.*;
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classTaskWithResultimplementsCallable{
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privateintid;
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publicTaskWithResult(intid) {
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this.id =id;
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}
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@Override
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publicStringcall()throwsException {
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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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publicclassCallableDemo {
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publicstaticvoidmain(Stringargs[]) {
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ExecutorServiceexec =Executors.newCachedThreadPool();
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ArrayList<Future<String>>results =newArrayList<Future<String>>();
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for(inti =0;i <10;i++) {
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results.add(exec.submit(newTaskWithResult(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(InterruptedExceptione) {
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System.out.println(e);
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return;
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}catch(ExecutionExceptione) {
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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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}
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//: concurrency/FixedThreadPool.java
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packagecom.concurrency21;
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importjava.util.concurrent.*;
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publicclassFixedThreadPool {
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publicstaticvoidmain(String[]args) {
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// TODO Auto-generated method stub
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ExecutorServiceexec =Executors.newFixedThreadPool(5);
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for(inti =0;i <5;i++)
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exec.execute(newLiftOff());
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exec.shutdown();
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}
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}
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packagecom.concurrency21;
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publicclassLiftOffimplementsRunnable {
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protectedintcountDown =10;
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privatestaticinttaskCount =0;
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privatefinalintid =taskCount++;
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publicLiftOff() {}
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publicLiftOff(intcountDown) {
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this.countDown =countDown;
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}
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publicStringstatus() {
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return"#" +id +"(" + (countDown >0?countDown :"Liftoff!") +"). ";
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}
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publicvoidrun() {
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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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publicstaticvoidmain(String[]args) {
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// TODO Auto-generated method stub
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}
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}

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