Notes

package com.example.sqlitedatabase;

import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.support.annotation.Nullable;

public class DatabaseHelper extends SQLiteOpenHelper {
public static final String DATABASE_NAME="Register.db";
public static final String TABLE_NAME="REGISTER";
public static final String COL_1="ID";
public static final String COL_2="NAME";
public static final String COL_3="PASSWORD";

public DatabaseHelper( Context context) {
super(context, DATABASE_NAME, null, 1);
}

@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {

sqLiteDatabase.execSQL("CREATE TABLE REGISTER(ID varchar(8) primary key, NAME varchar(20), PASSWORD varchar(20) )");

}

@Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {

}

public boolean REGISTER(String NAME, String PASSWORD, String ID ) {
SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put("ID", ID);
contentValues.put("NAME", NAME);
contentValues.put("PASSWORD", PASSWORD);

long l = sqLiteDatabase.insert("REGISTER", null, contentValues);
if (l > 0) {
return true;
} else {
return false;
}
}
}