Parcelable Interface is used to send data objects from one activity to another activity.

ParcelableInAndroid.java

public class StudentDataClass implements Parcelable {

    public String studentId;
    public String studentName;

    public StudentDataClass(String studentId, String studentName) {
        this.studentId = studentId;
        this.studentName = studentName;
    }

    protected StudentDataClass(Parcel in) {
        studentId = in.readString();
        studentName = in.readString();
    }
    
    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(studentId);
        dest.writeString(studentName);
    }

    public static final Creator<StudentDataClass> CREATOR = new Creator<StudentDataClass>() {
        @Override
        public StudentDataClass createFromParcel(Parcel in) {
            return new StudentDataClass(in);
        }

        @Override
        public StudentDataClass[] newArray(int size) {
            return new StudentDataClass[size];
        }
    };
    
    @Override
    public int describeContents() {
        return 0;
    }
}