In wireless sensor network jammers are one which extremely disturb the communications, which may be intentional or unintentional jamming attacks. To avoid or discard jamming attacks from jammer, jammers location information is used, which helps the defender to defend against jamming attacks. By using indirect measurement method (hearing ranges) only one jammer is determined. In this paper to find multiple jammer in wireless network, we designed and implemented a framework which can localize one or more than one jammers in wireless sensor network with a high accuracy by utilizing direct measurement. Direct measurement uses the Jamming Signals Strength (JSS) which leads to jammers actual or approximation location. To get the global optimal solution, different heuristic search algorithms are used. This paper proposesone more method called Graph plotting method for improving performance as well as monitoring of jammers in network to defend itself from external attacks.