java7新特性_JAVA_编程开发_程序员俱乐部

Map<String, List<Trade>> trades = new TreeMap<String, List<Trade>> ();

Map<String, List<Trade>> trades = new TreeMap <> ();

String status = t.getStatus();
switch (status) {
case NEW:
       break;
case EXECUTE:
       break;
case PENDING:
       break;
default:
       break;
}

try (FileOutputStream fos = new FileOutputStream("movies.txt");
          DataOutputStream dos = new DataOutputStream(fos)) {
          dos.writeUTF("Java 7 Block Buster");
} catch (IOException e) {

}

int thousand = 1_000;

int thousand = 1000;

public void newMultiCatch() {
     try {
            methodThatThrowsThreeExceptions();
     } catch (ExceptionOne | ExceptionTwo | ExceptionThree e) {
            // log and deal with all Exceptions
     }
}