Put the summary of the bug you're having here

Just Crash and tells me Error: java.lang.OutOfMemoryError: Java heap space

What I expected to happen was...:
I open the launcher and launch the game, and play

What actually happened was...:
I open the launcher and launch the game, and Crash and tells me the words above

Steps to Reproduce:
1. Open the launcher
2. choose any version
3. press start

RAM

I tried to search for this issue and tried to put more ram in Minecraft, but i still cant fix it 

Crash Report

---- Minecraft Crash Report -------- Minecraft Crash Report ----// I bet Cylons wouldn't have this problem.
Time: 8/31/18 8:59 PMDescription: Initializing game
java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3332) at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137) at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121) at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:569) at java.lang.StringBuilder.append(StringBuilder.java:190) at com.google.gson.stream.JsonReader.nextQuotedValue(JsonReader.java:1014) at com.google.gson.stream.JsonReader.nextString(JsonReader.java:815) at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:418) at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:406) at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:41) at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:82) at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61) at rc.a(SourceFile:504) at rc.a(SourceFile:512) at rc.a(SourceFile:527) at bid.a(SourceFile:877) at bid.<init>(SourceFile:376) at bib.aq(SourceFile:443) at bib.a(SourceFile:404) at net.minecraft.client.main.Main.main(SourceFile:123)

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:3332) at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137) at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121) at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:569) at java.lang.StringBuilder.append(StringBuilder.java:190) at com.google.gson.stream.JsonReader.nextQuotedValue(JsonReader.java:1014) at com.google.gson.stream.JsonReader.nextString(JsonReader.java:815) at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:418) at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:406) at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:41) at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:82) at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61) at rc.a(SourceFile:504) at rc.a(SourceFile:512) at rc.a(SourceFile:527) at bid.a(SourceFile:877) at bid.<init>(SourceFile:376) at bib.aq(SourceFile:443)
– Initialization --Details:Stacktrace: at bib.a(SourceFile:404) at net.minecraft.client.main.Main.main(SourceFile:123)
– System Details --Details: Minecraft Version: 1.12.2 Operating System: Windows 7 (amd64) version 6.1 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 486714400 bytes (464 MB) / 1073741824 bytes (1024 MB) up to 1073741824 bytes (1024 MB) JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 Launched Version: 1.12.2 LWJGL: 2.9.4 OpenGL: ~_ERROR~ RuntimeException: No OpenGL context found in the current thread. GL Caps:  Using VBOs: ~_ERROR~ NullPointerException: null Is Modded: Probably not. Jar signature remains and client brand is untouched. Type: Client (map_client.txt) Resource Packs: ~_ERROR~ NullPointerException: null Current Language: ~_ERROR~ NullPointerException: null Profiler Position: N/A (disabled) CPU: <unknown>