Set up an Android development environment with Eclipse and compile and run HelloWorld.

2 years ago
Benjamin Taylor
2 minutes

To set up the Android development environment in Eclipse and compile and run the HelloWorld application, you need to follow these steps:

  1. Download and install the Java Development Kit (JDK): Make sure you have installed the JDK and configured it as a system environment variable.
  2. Download and install Eclipse: Download the Eclipse IDE for Java development from the official Eclipse website and follow the installation wizard to install it.
  3. Install Android plugins: Open Eclipse, go to the “Help” > “Eclipse Marketplace” menu, search and install plugins suitable for Android development (such as ADT plugin, Android Studio plugin, etc).
  4. Set up Android SDK: Open Eclipse, go to the “Window” > “Preferences” menu, locate the “Android” option, and specify the path for your Android SDK.
  5. To create an Android project, go to the “File” menu, select “New,” and then choose “Android Application Project.” Fill in the project name, package name, application name, and other information in the wizard to create a new Android project.
  6. Create a HelloWorld application: In the Android project you have created, locate the “src” folder, right click on it, select “New” > “Class” menu, and create a new Java class file. Write the code for the HelloWorld application in this class as shown below:
package com.example.helloworld;

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

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

        TextView textView = new TextView(this);
        textView.setText("Hello, World!");
        setContentView(textView);
    }
}
  1. Compile and run the application: Select the “Run” > “Run” menu, choose your Android device or emulator as the target device, and click the “Run” button to compile and run the HelloWorld application. You will see an application displaying “Hello, World!” on your device or emulator.

In this way, you have successfully set up the Android development environment in Eclipse and compiled and run the HelloWorld application.

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