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Error: java.lang.OutOfMemoryError: Java heap space Is what I saw when I tryed launching pixelmon 1.10.2

full Crash Report:

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Would you like a cupcake?
Time: 5/21/17 7:39 PMDescription: Initializing game
java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3236) at sun.misc.IOUtils.readFully(IOUtils.java:60) at java.util.jar.JarFile.getBytes(JarFile.java:425) at java.util.jar.JarFile.getManifestFromReference(JarFile.java:193) at java.util.jar.JarFile.getManifest(JarFile.java:180) at sun.misc.URLClassPath$JarLoader$2.getManifest(URLClassPath.java:780) at java.net.URLClassLoader.defineClass(URLClassLoader.java:422) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:367) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:360) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:459) at org.apache.logging.log4j.core.impl.ThrowableProxy.resolvePackageData(ThrowableProxy.java:395) at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:97) at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:114) at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:90) at org.apache.logging.log4j.core.impl.DefaultLogEventFactory.createEvent(DefaultLogEventFactory.java:49) at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:365) at org.apache.logging.log4j.core.Logger.log(Logger.java:110) at org.apache.logging.log4j.spi.AbstractLogger.log(AbstractLogger.java:1448) at net.minecraftforge.fml.relauncher.FMLRelaunchLog.log(FMLRelaunchLog.java:92) at net.minecraftforge.fml.common.FMLLog.log(FMLLog.java:47) at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:167) at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:807) at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:334) at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:520) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:351) at net.minecraft.client.main.Main.main(SourceFile:124)

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
-- Head --Thread: Client threadStacktrace: at java.util.Arrays.copyOf(Arrays.java:3236) at sun.misc.IOUtils.readFully(IOUtils.java:60) at java.util.jar.JarFile.getBytes(JarFile.java:425) at java.util.jar.JarFile.getManifestFromReference(JarFile.java:193) at java.util.jar.JarFile.getManifest(JarFile.java:180) at sun.misc.URLClassPath$JarLoader$2.getManifest(URLClassPath.java:780) at java.net.URLClassLoader.defineClass(URLClassLoader.java:422) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:367) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:360) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:459) at org.apache.logging.log4j.core.impl.ThrowableProxy.resolvePackageData(ThrowableProxy.java:395) at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:97) at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:114) at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:90) at org.apache.logging.log4j.core.impl.DefaultLogEventFactory.createEvent(DefaultLogEventFactory.java:49) at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:365) at org.apache.logging.log4j.core.Logger.log(Logger.java:110) at org.apache.logging.log4j.spi.AbstractLogger.log(AbstractLogger.java:1448)
-- Initialization --Details:Stacktrace: at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:356) at net.minecraft.client.main.Main.main(SourceFile:124) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
-- System Details --Details: Minecraft Version: 1.10.2 Operating System: Windows 8.1 (amd64) version 6.3 Java Version: 1.8.0_25, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 267208 bytes (0 MB) / 1060372480 bytes (1011 MB) up to 1060372480 bytes (1011 MB) JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: MCP 9.32 Powered by Forge 12.18.3.2254 5 mods loaded, 5 mods active States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored UCHI mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) UCHI FML{8.0.99.99} [Forge Mod Loader] (forge-1.10.2-12.18.3.2254.jar) UCHI Forge{12.18.3.2254} [Minecraft Forge] (forge-1.10.2-12.18.3.2254.jar) UCHI mercurius_updater{1.0} [mercurius_updater] (MercuriusUpdater-1.10.2.jar) UCHE pixelmon{5.0.4} [Pixelmon] (Pixelmon-1.10.2-5.0.4-universal.jar) Loaded coremods (and transformers): GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.4.0' Renderer: 'GeForce GTX 745/PCIe/SSE2' Launched Version: 1.10.2-forge1.10.2-12.18.3.2254 LWJGL: 2.9.4 OpenGL: GeForce GTX 745/PCIe/SSE2 GL version 4.4.0, NVIDIA Corporation GL Caps: Using GL 1.3 multitexturing.Using GL 1.3 texture combiners.Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.Shaders are available because OpenGL 2.1 is supported.VBOs are available because OpenGL 1.5 is supported.
Using VBOs: Yes Is Modded: Definitely; Client brand changed to 'fml,forge' Type: Client (map_client.txt) Resource Packs: Current Language: English (US) Profiler Position: N/A (disabled) CPU: 12x Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz

PLEASE HELP!

Thanks.

allocate more ram to minecraft