// JDK 6
Map<String, List<Integer>> altName2msn = new HashMap<String, List<Integer>>();
// JDK 7, Diamond Operator
Map<String, List<Integer>> coinName2msn = new HashMap<>();

// JDK 6
OutputStream fos = null;
try {
    fos = new FileOutputStream("ausgabe.txt");
    fos.write(42);
} catch (IOException exp) {
    // ...
} finally {
    try {
        if (fos != null) {
            fos.close();
        }
    } catch (IOException exp) {
        // ...
    }
}


// JDK 7, Try with Resource and multiple catch
try (OutputStream out = new FileOutputStream("ausgabe.txt")) {
    out.write(42);
} catch (ArithmeticException | IOException exp) {
    // ...
}

// JDK 6
long SOURCE_ENTITY_TYPE_MASK = Long.parseLong("10000000" + //
        "00000000" + //
        "00000000" + //
        "10000000", 2);
// JDK 7
long coin = 0b10000000_00000000_00000000_10000000L;

// JDK 7, Datei kopieren
File src = new File("eingabe.txt");
File dest = new File("ausgabe.txt");
Files.copy(src.toPath(), dest.toPath(), StandardCopyOption.REPLACE_EXISTING);