Cara Mengirim Data ke Activity Lain Menggunakan Intent Android Studio

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp"
        android:layout_centerHorizontal="true"
        android:text="@string/halaman_pertama"
        android:textSize="25sp"
        android:textStyle="bold" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="200sp"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView"
        android:layout_marginTop="20sp"
        android:layout_centerHorizontal="true"/>

    <Button
        android:id="@+id/btnBerikut"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText"
        android:layout_marginTop="10sp"
        android:layout_centerHorizontal="true"
        android:text="@string/halaman_berikutnya"/>
</RelativeLayout>

package com.example.helloworld;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    EditText editText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        editText = (EditText)findViewById(R.id.editText);
        Button btnBerikut = (Button)findViewById(R.id.btnBerikut);
        btnBerikut.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getApplicationContext(), SecondActivity.class);
                intent.putExtra("dataKirim", editText.getText().toString());
                startActivity(intent);
            }
        });
    }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".SecondActivity">

    <TextView
        android:id="@+id/txtKedua"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp"
        android:layout_centerHorizontal="true"
        android:text="@string/halaman_kedua"
        android:textSize="25sp"
        android:textStyle="bold"/>

    <TextView
        android:id="@+id/txtData"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/txtKedua"
        android:layout_marginTop="20sp"
        android:layout_centerHorizontal="true"
        android:text="@string/isi_data"
        android:textSize="25sp"/>
</RelativeLayout>

package com.example.helloworld;

import androidx.appcompat.app.AppCompatActivity;

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

public class SecondActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);

        String dataKirim = getIntent().getStringExtra("dataKirim");
        TextView txtData = (TextView)findViewById(R.id.txtData);
        txtData.setText(dataKirim);
    }
}