Why is my Minecraft crashing?

I was about to start Minecraft and after trying 10 I got the idea to ask here. My Minecraft keeps crashing after joining a multiplayer server. (according to loading terrain)

ERROR REPORT:

#

# There's insufficient memory for the Java Runtime Environment to continue.

# Native memory allocation (mmap) failed to map 33554432 bytes for Failed to commit pages from 262144 of length 8192

# Possible reasons:

# The system is out of physical RAM or swap space

# In 32 bit mode, the process size limit was hit

# Possible solutions:

# Reduce memory load on the system

# Increase physical memory or swap space

# Check if swap backing store is full

# Use 64 bit Java on a 64 bit OS

# Decrease Java heap size (-Xmx / -Xms)

# Decrease number of Java threads

# Decrease Java thread stack sizes (-Xss)

# Set larger code cache with -XX: ReservedCodeCacheSize =

# This output file may be truncated or incomplete.

#

# Out of Memory Error (os_windows.cpp: 3324), pid = 10372, tid = 15236

#

# JRE version: Java (TM) SE Runtime Environment (8.0_51-b16) (build 1.8.0_51-b16)

# Java VM: Java HotSpot (TM) 64-Bit Server VM (25.51-b03 mixed mode windows-amd64 compressed oops)

# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

Have you ever quit the game in Task Manager?

You have too little ram / your Minecraft is not receiving enough ram.

How much RAM do you have installed? Are you playing on Windows 32 or 64 bit?

In Windows 10 you can find the information under Settings → System → Info.

No why?
and if what can you do about it then I can test it

It more or less just says that you have too little memory free to finish loading the world.

Okay can you help me i have connected a hard drive but i don't know how everything can run over it

No, I'm sorry, I don't really know anything about it.

Have 8GB RAM installed

Press CTRL ALT and DEL and open your task manager and then you press end task there maybe it works if not I would download Minecraft again

Search times in Windows for Task Manager. Alternatively: a right click on the start menu → Task Manager.

If this is your first time, click on "more details" at the bottom left. Then on top of "Performance". How much memory is being used (without Minecraft being open).

75%

This means?

That's quite a lot! What do you have open in the background… While you play MC?