Possible Duplicate:
installed jvm is 64 bit or 32 bit可能重复：安装的jvm是64位或32位
How do I check which bit version of Java is installed on my linux machine? When I type:
如何检查我的linux机器上安装了哪个位版本的Java？当我输入：
java -version
I get:
我明白了：
java version "1.6.0_16"
Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
Java HotSpot(TM) Server VM (build 14.2-b01, mixed mode)
Is that 32bit or 64bit?
是32位还是64位？
4 个解决方案
#1
19
Run java with -d64 or -d32 specified, it will give you an error message if it doesn't support 64-bit or 32-bit respectively. Your JVM may support both.
使用指定的-d64或-d32运行java，如果它不支持64位或32位，它将给出错误消息。您的JVM可能同时支持两者。
#2
1
Why don't you examine System.getProperty("os.arch") value in your code?
为什么不检查代码中的System.getProperty（“os.arch”）值？
#3
0
Go to this JVM online test and run it.
转到此JVM在线测试并运行它。
Then check the architecture displayed: x86_64 means you have the 64bit version installed, otherwise it's 32bit.
然后检查显示的体系结构：x86_64表示您已安装64位版本，否则为32位。
#4
0
Works for every binary, not only java:
适用于每个二进制文件，而不仅仅是java：
file - < $(which java) # heavyly bashic
cat `which java` | file - # universal
#1
19
Run java with -d64 or -d32 specified, it will give you an error message if it doesn't support 64-bit or 32-bit respectively. Your JVM may support both.
使用指定的-d64或-d32运行java，如果它不支持64位或32位，它将给出错误消息。您的JVM可能同时支持两者。
#2
1
Why don't you examine System.getProperty("os.arch") value in your code?
为什么不检查代码中的System.getProperty（“os.arch”）值？
#3
0
Go to this JVM online test and run it.
转到此JVM在线测试并运行它。
Then check the architecture displayed: x86_64 means you have the 64bit version installed, otherwise it's 32bit.
然后检查显示的体系结构：x86_64表示您已安装64位版本，否则为32位。
#4
0
Works for every binary, not only java:
适用于每个二进制文件，而不仅仅是java：
file - < $(which java) # heavyly bashic
cat `which java` | file - # universal