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sorry if I'm doing this wrong, Im pretty new. The title says it all, Java stops working whenever i try to use minecraft This is what the launcher says

Current time is Nov 23, 2013 5:57:47 PM
System.getProperty('os.name') == 'Windows 7'
System.getProperty('os.version') == '6.1'
System.getProperty('os.arch') == 'x86'
System.getProperty('java.version') == '1.7.0_45'
System.getProperty('java.vendor') == 'Oracle Corporation'
System.getProperty('sun.arch.data.model') == '32'

Looking for update
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma
Got reply in: 347ms
No update found.
Reversing LZMA on C:\Users\Jackie\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\Users\Jackie\AppData\Roaming\.minecraft\launcher.pack
Unpacking C:\Users\Jackie\AppData\Roaming\.minecraft\launcher.pack to C:\Users\Jackie\AppData\Roaming\.minecraft\launcher.jar
Cleaning up C:\Users\Jackie\AppData\Roaming\.minecraft\launcher.pack
Starting launcher.
FATAL ERROR: java.lang.NoClassDefFoundError: org/apache/logging/log4j/core/config/plugins/PluginFactory
at org.apache.logging.log4j.core.config.BaseConfiguration.createPluginObject(BaseConfiguration.java:650)
at org.apache.logging.log4j.core.config.BaseConfiguration.createConfiguration(BaseConfiguration.java:595)
at org.apache.logging.log4j.core.config.BaseConfiguration.createConfiguration(BaseConfiguration.java:587)
at org.apache.logging.log4j.core.config.BaseConfiguration.createConfiguration(BaseConfiguration.java:587)
at org.apache.logging.log4j.core.config.BaseConfiguration.doConfigure(BaseConfiguration.java:244)
at org.apache.logging.log4j.core.config.BaseConfiguration.start(BaseConfiguration.java:142)
at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:339)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:378)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:149)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:85)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:34)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:387)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:322)
at net.minecraft.launcher.Launcher.<clinit>(Launcher.java:58)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at net.minecraft.bootstrap.Bootstrap.startLauncher(Bootstrap.java:240)
at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:124)
at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:381)
Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.core.config.plugins.PluginFactory
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 21 more


Please fix the error and restart.

can anyone help??

Quote from webrosc

goto your uninstall programs page in control panel and remove all the java's apart from ' java 7 update 45 '

that was the only version of java there