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Simplify code

1 parenta636658 commite422b65Copy full SHA for e422b65

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3 files changed

+21

-50

lines changed

src/com/winterbe/java8/samples/concurrent

3 files changed

+21

-50

lines changed

`‎src/com/winterbe/java8/samples/concurrent/Lock2.java`

Lines changed: 2 additions & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -18,13 +18,10 @@ public static void main(String[] args) {`
`18`	`18`	`executor.submit(() -> {`
`19`	`19`	`lock.lock();`
`20`	`20`	`try {`
`21`		`-System.out.println(lock.isLocked());`
`22`	`21`	`TimeUnit.SECONDS.sleep(1);`
`23`		`- }`
`24`		`-catch (InterruptedExceptione) {`
	`22`	`+ }catch (InterruptedExceptione) {`
`25`	`23`	`thrownewIllegalStateException(e);`
`26`		`- }`
`27`		`-finally {`
	`24`	`+ }finally {`
`28`	`25`	`lock.unlock();`
`29`	`26`	`}`
`30`	`27`	`});`

`‎src/com/winterbe/java8/samples/concurrent/Lock3.java`

Lines changed: 9 additions & 27 deletions

Original file line number	Diff line number	Diff line change
`@@ -25,44 +25,26 @@ public static void main(String[] args) {`
`25`	`25`	`try {`
`26`	`26`	`TimeUnit.SECONDS.sleep(1);`
`27`	`27`	`map.put("foo","bar");`
`28`		`- }`
`29`		`-catch (InterruptedExceptione) {`
	`28`	`+ }catch (InterruptedExceptione) {`
`30`	`29`	`thrownewIllegalStateException(e);`
`31`		`- }`
`32`		`-finally {`
	`30`	`+ }finally {`
`33`	`31`	`lock.writeLock().unlock();`
`34`	`32`	`}`
`35`	`33`	`});`
`36`	`34`
`37`		`-executor.submit(() -> {`
	`35`	`+RunnablereadTask =() -> {`
`38`	`36`	`lock.readLock().lock();`
`39`	`37`	`try {`
`40`		`-Stringfoo =map.get("foo");`
`41`		`-System.out.println(foo);`
	`38`	`+System.out.println(map.get("foo"));`
`42`	`39`	`TimeUnit.SECONDS.sleep(1);`
`43`		`- }`
`44`		`-catch (InterruptedExceptione) {`
	`40`	`+ }catch (InterruptedExceptione) {`
`45`	`41`	`thrownewIllegalStateException(e);`
`46`		`- }`
`47`		`-finally {`
	`42`	`+ }finally {`
`48`	`43`	`lock.readLock().unlock();`
`49`	`44`	`}`
`50`		`- });`
`51`		`-`
`52`		`-executor.submit(() -> {`
`53`		`-lock.readLock().lock();`
`54`		`-try {`
`55`		`-Stringfoo =map.get("foo");`
`56`		`-System.out.println(foo);`
`57`		`-TimeUnit.SECONDS.sleep(1);`
`58`		`- }`
`59`		`-catch (InterruptedExceptione) {`
`60`		`-thrownewIllegalStateException(e);`
`61`		`- }`
`62`		`-finally {`
`63`		`-lock.readLock().unlock();`
`64`		`- }`
`65`		`- });`
	`45`	`+ };`
	`46`	`+executor.submit(readTask);`
	`47`	`+executor.submit(readTask);`
`66`	`48`
`67`	`49`	`ConcurrentUtils.stop(executor);`
`68`	`50`	`}`

`‎src/com/winterbe/java8/samples/concurrent/Lock4.java`

Lines changed: 10 additions & 18 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,7 @@`
`1`	`1`	`packagecom.winterbe.java8.samples.concurrent;`
`2`	`2`
	`3`	`+importjava.util.HashMap;`
	`4`	`+importjava.util.Map;`
`3`	`5`	`importjava.util.concurrent.ExecutorService;`
`4`	`6`	`importjava.util.concurrent.Executors;`
`5`	`7`	`importjava.util.concurrent.TimeUnit;`
`@@ -10,48 +12,38 @@`
`10`	`12`	`*/`
`11`	`13`	`publicclassLock4 {`
`12`	`14`
`13`		`-privatestaticintcount =0;`
`14`		`-`
`15`	`15`	`publicstaticvoidmain(String[]args) {`
`16`	`16`	`ExecutorServiceexecutor =Executors.newFixedThreadPool(2);`
`17`	`17`
	`18`	`+Map<String,String>map =newHashMap<>();`
	`19`	`+`
`18`	`20`	`StampedLocklock =newStampedLock();`
`19`	`21`
`20`	`22`	`executor.submit(() -> {`
`21`	`23`	`longstamp =lock.writeLock();`
`22`	`24`	`try {`
`23`		`-count++;`
`24`	`25`	`TimeUnit.SECONDS.sleep(1);`
	`26`	`+map.put("foo","bar");`
`25`	`27`	`}catch (InterruptedExceptione) {`
`26`	`28`	`thrownewIllegalStateException(e);`
`27`	`29`	`}finally {`
`28`	`30`	`lock.unlockWrite(stamp);`
`29`	`31`	`}`
`30`	`32`	`});`
`31`	`33`
`32`		`-executor.submit(() -> {`
	`34`	`+RunnablereadTask =() -> {`
`33`	`35`	`longstamp =lock.readLock();`
`34`	`36`	`try {`
`35`		`-System.out.println(Thread.currentThread().getName() +": " +count);`
	`37`	`+System.out.println(map.get("foo"));`
`36`	`38`	`TimeUnit.SECONDS.sleep(1);`
`37`	`39`	`}catch (InterruptedExceptione) {`
`38`	`40`	`thrownewIllegalStateException(e);`
`39`	`41`	`}finally {`
`40`	`42`	`lock.unlockRead(stamp);`
`41`	`43`	`}`
`42`		`- });`
`43`		`-`
`44`		`-executor.submit(() -> {`
`45`		`-longstamp =lock.readLock();`
`46`		`-try {`
`47`		`-System.out.println(Thread.currentThread().getName() +": " +count);`
`48`		`-TimeUnit.SECONDS.sleep(1);`
`49`		`- }catch (InterruptedExceptione) {`
`50`		`-thrownewIllegalStateException(e);`
`51`		`- }finally {`
`52`		`-lock.unlockRead(stamp);`
`53`		`- }`
`54`		`- });`
	`44`	`+ };`
	`45`	`+executor.submit(readTask);`
	`46`	`+executor.submit(readTask);`
`55`	`47`
`56`	`48`	`ConcurrentUtils.stop(executor);`
`57`	`49`	`}`

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Commite422b65

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3 files changed

3 files changed

`‎src/com/winterbe/java8/samples/concurrent/Lock2.java`

`‎src/com/winterbe/java8/samples/concurrent/Lock3.java`

`‎src/com/winterbe/java8/samples/concurrent/Lock4.java`

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