linux中jvm内存不够怎么解决？

[lihongli201107]

Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
在安装spark时总是出现上述问题（ubuntu14.04系统），在网上搜了好久也没有解决，搭个spark从jdk8一路装到jdk6，还是出问题，java真是让我精疲力尽啊。

[Inhibitory]

加大JVM启动时的内存 java -Xmx1g -Xms1g application -Xmx1g 设置最大可用内存为1g -Xms1g 设置内存初始化最小值1g

[lihongli201107]

引用 1 楼 Inhibitory 的回复:

加大JVM启动时的内存 java -Xmx1g -Xms1g application -Xmx1g 设置最大可用内存为1g -Xms1g 设置内存初始化最小值1g

Exception in thread "main" java.lang.NoClassDefFoundError: application Caused by: java.lang.ClassNotFoundException: application at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: application. Program will exit.

[lihongli201107]

[Invalid UTF-8][Invalid UTF-8][Invalid UTF-8]

[JPF1024]

引用 2 楼 lihongli201107 的回复:

[quote=引用 1 楼 Inhibitory 的回复:] 加大JVM启动时的内存 java -Xmx1g -Xms1g application -Xmx1g 设置最大可用内存为1g -Xms1g 设置内存初始化最小值1g

Exception in thread "main" java.lang.NoClassDefFoundError: application Caused by: java.lang.ClassNotFoundException: application at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: application. Program will exit. [/quote] 没找到main方法..

[lihongli201107]

没找到main方法是环境变量的问题吗，用的是java6.