benweidig

public interface AutoCloseable {
  
    void close() throws Exception;
}

public interface Closeable extends AutoCloseable {

    void close() throws IOException;
}

benweidig

interface MyInterface {

    void doWork() throws IOException;
}


class MyClass {

    public void moreWork() throws FileNotFoundException {
        ...

benweidig

public void logMessage(String message) {
    if (message == null) {
        throw new NullPointerException("'message' must not be null'");
    }

    if (message.isEmpty()) {
        throw new IllegalArgumentException("'message' must not be empty");
    }

    ...

benweidig

try (Socket socket = new Socket();
     InputStream input = new DataInputStream(socket.getInputStream());
     OutputStream output = new DataOutputStream(socket.getOutputStream())) {
         ...
}

benweidig

try (FileReader reader = new FileReader("awesome-file.txt")) {
    int content = 0;
    while (content != -1) {
        content = reader.read();
        ...
    }
}
catch (IOException e) {
    // handle any exceptions
}

benweidig

FileReader reader = null;
try {
    reader = new FileReader("awesome-file.txt");

    int content = 0;
    while (content != -1) {
        content = reader.read();
        ...
    }
}

benweidig

try {
    ...
}
catch (FileNotFound | UnsupportedEncodingException e) {
    ...
}

benweidig

try {
    // open a file

    // read file

    // do the work
}
catch(FileNotFoundException e) {
    // handle missing file
}

benweidig

public boolean isDeleted() {
    return getTimeDeleted() != null;
}

benweidig

long primitiveValue = 1_024L;
Long objectValue = 1_024L;

long primitiveSum = primitiveValue + objectValue;
Long objectSum = primitiveValue + objectValue;