[android help] How to add date in sqlite database

I have sqlite database

    private static final String DB_PROCESS_CREATE = "create table "
        + DB_TABLE_PROCESS + "(" + PROCESS_ID
        + " integer primary key autoincrement, "
        + PROCESS_DATE + " date);";

I create it `db.execSQL(DB_PROCESS_CREATE);

How to add date value in this datebase? I tried :

String date = new SimpleDateFormat("yyyy.MM.dd").format(Calendar
.getInstance().getTime());
ContentValues cv = new ContentValues();
cv.put(db.PROCESS_DATE,Date.valueOf(date));
db.mDB.insert(db.DB_TABLE_PROCESS, null, cv));

But then I get error "The method put(String, String) in the type ContentValues is not applicable for the arguments (String, Date)".

.

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