android - SQLite database errors with inputting data -

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i've finished creating first database, think of syntax in oncreate wrong. can't figure out however? i've tried looking @ tutorials , tried tailor code towards theirs, nothing seems working. 

package com.example.bash1.sqlitediss; import android.content.contentvalues; import android.content.context; import android.database.sqlite.sqlitedatabase; import android.database.sqlite.sqliteopenhelper;  public class databasehelper extends sqliteopenhelper { // database name public static final string database_stockdb = "stock.db"; // column names public static final string table_name = "stock_table"; public static final string col_1 = "id"; public static final string col_2 = "name"; public static final string col_3 = "datereceived"; public static final string col_4 = "expirydate";  public databasehelper(context context) {     super(context, database_stockdb, null, 1); }  @override public void oncreate(sqlitedatabase db) {     db.execsql("create table stock_table " + table_name + " (" + col_1 + "integer primary key,"+ col_2 + "integer,"+ col_3 + "integer," + col_4 +"integer" + ")"); }  @override public void onupgrade(sqlitedatabase db, int oldversion, int newversion) {     db.execsql("drop table if exists " + table_name);      oncreate(db); }  public boolean insertdata(string name, string datereceived, string expirydate){ sqlitedatabase db = this.getwritabledatabase();     contentvalues contentvalues = new contentvalues();     contentvalues.put(col_2, name);     contentvalues.put(col_3, datereceived);     contentvalues.put(col_4, expirydate);     long result = db.insert(table_name,null,contentvalues);      if (result == -1 )        return false;     else        return true;      }   }

the error follows:

error inserting name=sss datereceived=s expirydate=s`

android.database.sqlite.sqliteexception: table stock_table has no column named name (code 1): , while compiling: insert stock_table(name,datereceived,expirydate) values (?,?,?)

the problem create table command has no space between column name , type -

@override public void oncreate(sqlitedatabase db) {     db.execsql("create table stock_table " + table_name + " (" + col_1 + "integer primary key,"+ col_2 + "integer,"+ col_3 + "integer," + col_4 +"integer" + ")"); }

that's why don't have column "name" "nameinteger". similar issue other columns too. also, inserting text values have integer type columns , change columns except primary key text type columns. change -

@override public void oncreate(sqlitedatabase db) {     db.execsql("create table " + table_name + " (" + col_1 + " integer  primary key,"+ col_2 + " text, "+ col_3 + " text, " + col_4 +" text" + ")"); }

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