OutOfMemoryError: Direct Buffer

Grave: Uncaught exception thrown in Thread[LWJGL Renderer Thread,5,main]
java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:658)
at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:306)
at com.jme3.util.BufferUtils.createByteBuffer(BufferUtils.java:956)
at com.jme3.texture.plugins.AWTLoader.load(AWTLoader.java:121)
at com.jme3.texture.plugins.AWTLoader.load(AWTLoader.java:191)
at com.jme3.texture.plugins.AWTLoader.load(AWTLoader.java:200)
at com.jme3.asset.DesktopAssetManager.loadAsset(DesktopAssetManager.java:288)
at com.jme3.asset.DesktopAssetManager.loadTexture(DesktopAssetManager.java:346)
at com.jme3.asset.DesktopAssetManager.loadTexture(DesktopAssetManager.java:356)
at my_pfe.test1.simpleInitApp(test1.java:394)
at com.jme3.app.SimpleApplication.initialize(SimpleApplication.java:226)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:130)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:207)
at java.lang.Thread.run(Thread.java:744)

how can i fix this problm

help me please

http://www.gemstone.com/docs/html/gemfire/6.0.0/SystemAdministratorsGuide/monitoring_tuning.8.4.html