Keeps cutting out

We don't know exactly what is happening, it keeps crashing randomly. It came up with this report and said to report it.

Minecraft Crash Report ----
// Uh... Did I do that?

Time: 14/02/16 17:33
Description: Registering texture

java.lang.OutOfMemoryError: Java heap space

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

– Head –
Stacktrace:
at bmj.a(SourceFile:64)

– Resource location being registered –
Details:
Resource location: minecraft:textures/font/unicode_page_fe.png
Texture object class: bme
Stacktrace:
at bmj.a(SourceFile:64)
at bmj.a(SourceFile:38)
at avn.b(SourceFile:209)
at avn.b(SourceFile:219)
at avn.a(SourceFile:172)
at avn.a(SourceFile:368)
at avn.b(SourceFile:453)
at avn.a(SourceFile:263)
at avn.a(SourceFile:249)
at avp.a(SourceFile:99)
at axl$a.a(SourceFile:140)
at awi.b(SourceFile:412)
at awi.a(SourceFile:211)
at axl.a(SourceFile:79)
at bfk.a(SourceFile:1039)
at ave.av(SourceFile:915)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)

– Screen render details –
Details:
Screen name: axl
Mouse location: Scaled: (227, 239). Absolute: (454, 289)
Screen size: Scaled: (683, 384). Absolute: (1366, 768). Scale factor of 2

– System Details –
Details:
Minecraft Version: 1.8.9
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: 4506256 bytes (4 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
Launched Version: 1.8.9
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 4400 GL version 4.2.0 - Build 10.18.10.3412, Intel
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: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz