Java ソフトウェアの種類と特性をわかりやすく説明する: さまざまな種類の Java ソフトウェアとその特性を理解する

import javax.swing.*;

public class HelloWorldGUI {
    public static void main(String[] args) {
        JFrame frame = new JFrame("HelloWorld");
        JLabel label = new JLabel("Hello, World!");

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(label);
        frame.pack();
        frame.setVisible(true);
    }
}

import java.util.Scanner;

public class HelloWorldConsole {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入您的姓名：");
        String name = scanner.nextLine();
        System.out.println("Hello, " + name + "!");
    }
}

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class HelloWorldAndroid extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        TextView textView = new TextView(this);
        textView.setText("Hello, World!");

        setContentView(textView);
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication
public class HelloWorldWeb {
    public static void main(String[] args) {
        SpringApplication.run(HelloWorldWeb.class, args);
    }

    @GetMapping("/")
    public String helloWorld() {
        return "Hello, World!";
    }
}

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface HelloWorld extends Remote {
    String sayHello() throws RemoteException;
}

public class HelloWorldServer {
    public static void main(String[] args) {
      try {
          HelloWorld helloWorld = new HelloWorldImpl();
          Registry registry = LocateRegistry.createRegistry(1099);
          registry.rebind("HelloWorld", helloWorld);
          System.out.println("Server is running...");
      } catch (Exception e) {
          e.printStackTrace();
      }
  }
}

public class HelloWorldClient {
    public static void main(String[] args) {
        try {
            Registry registry = LocateRegistry.getRegistry("localhost", 1099);
            HelloWorld helloWorld = (HelloWorld) registry.lookup("HelloWorld");
            System.out.println(helloWorld.sayHello());
        } catch (Exception e) {
            e.printStackTrace();
      }
  }
}

import io.silverspoon.bulldog.core.io.I2C;
import io.silverspoon.bulldog.core.platform.Board;
import io.silverspoon.bulldog.core.platform.Platform;
import io.silverspoon.bulldog.core.platform.Raspi;

public class HelloWorldEmbedded {
    public static void main(String[] args) {
        Board board = Platform.createBoard();
        I2C i2c = board.getI2cBus("I2C-1").get();

        // 控制设备进行操作
        // ...
    }
}