typo on
int[][] items = { {Config.DWARF_REWARD1, Config.DWARF_REWARD_AMMOUNT1}, {Config.DWARF_REWARD2, Config.DWARF_REWARD_AMMOUNT2}, {Config.DWARF_REWARD3, Config.DWARF_REWARD_AMMOUNT3}, {Config.DWARF_REWARD4, Config.DWARF_REWARD_AMMOUNT4}, {Config.DWARF_REWARD5, Config.DWARF_REWARD_AMMOUNT5}, {Config.DWARF_REWARD6, Config.DWARF_REWARD_AMMOUNT6}, {Config.DWARF_REWARD7, Config.DWARF_REWARD_AMMOUNT7}, {Config.DWARF_REWARD8, Config.DWARF_REWARD_AMMOUNT8}, {Config.DWARF_REWARD9, Config.DWARF_REWARD_AMMOUNT9}, {Config.DWARF_REWARD1, Config.DWARF_REWARD_AMMOUNT10} };