jdk 1.5 패키지 확장

http://qola.springnote.com/pages/24914

java.lang.ProcessBuilder
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Runtime.exec 보다 간단한 방법으로 서브 프로세스를 호출
ex)
ProcessBuilder pb = new ProcessBuilder("myCommand", "myArg1", "myArg2");
Map<String, String> env = pb.environment();
env.put("VAR1", "myValue");
env.remove("OTHERVAR");
env.put("VAR2", env.get("VAR1") + "suffix");
pb.directory("myDir");
Process p = pb.start();


java.util.Formatter
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   StringBuilder sb = new StringBuilder();
   // Send all output to the Appendable object sb
   Formatter formatter = new Formatter(sb, Locale.US);

   // Explicit argument indices may be used to re-order output.
   formatter.format("%4$2s %3$2s %2$2s %1$2s", "a", "b", "c", "d")
   // -> " d  c  b  a"

   // Optional locale as the first argument can be used to get
   // locale-specific formatting of numbers.  The precision and width can be
   // given to round and align the value.
   formatter.format(Locale.FRANCE, "e = %+10.4f", Math.E);
   // -> "e =    +2,7183"

   // The '(' numeric flag may be used to format negative numbers with
   // parentheses rather than a minus sign.  Group separators are
   // automatically inserted.
   formatter.format("Amount gained or lost since last statement: $ %(,.2f",
                    balanceDelta);
   // -> "Amount gained or lost since last statement: $ (6,217.58)"


java.util.Scanner
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Scanner sc = new Scanner(System.in);
int i = sc.nextInt();

Scanner sc = new Scanner(new File("myNumbers"));
while (sc.hasNextLong()) { long aLong = sc.nextLong();
}

String input = "1 fish 2 fish red fish blue fish";
Scanner s = new Scanner(input). useDelimiter("\\s*fish\\s*");
// "\s* : 0 또는 하나 이상의 공백 반각 스페이스  
System.out.println(s.nextInt());
System.out.println(s.nextInt());
System.out.println(s.next());
System.out.println(s.next());
s.close();

String input = "1 fish 2 fish red fish blue fish";
Scanner s = new Scanner(input);
s.findInLine("(\\d+) fish (\\d+) fish (\\w+) fish (\\w+)");
MatchResult result = s.match();
for (int i=0;i<=result.groupCount();i++) { // groupCount(): 정규 표현 그룹의 수
  System.out.println(result.group(i)); // group() 일치한 입력 부분
}
s.close();
-->
1 fish 2 fish red fish blue  
1  
2
red
blue


java.util.concurrent
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http://java.sun.com/j2se/1.5.0/docs/api/java/util/concurrent/package-summary.html
http://kr.sun.com/developers/techtips/c2005_0216.html
( Semaphore, CountDownLatch,  Exchanger  를 이용한 동기화 )
http://sangchin.byus.net/FlashHelp/Java_util_concurrent/fixedworkqueue.html
( Creating a Bounded Work Queus )
http://www.java2s.com/Code/JavaAPI/java.util.concurrent/Catalogjava.util.concurrent.htm
( CyclicBarrier , Executors, ExecutorService, TimeUnit 샘플)
http://www.informit.com/articles/article.asp?p=335378&rl=1
(Using the new Concurrent Utility Classes in Java 5.0)