Question

我是java和jdb的新手，尝试调试示例程序：

Foo.java


class Foo {
public static void main(String[] args){
System.out.println("Chexking dalvik virtual machine on system");
}
}

compiled it with -g flag . javac -g Foo.java

compiled properly . 

Tried to run program using command >java Foo
Got the output .


Then tried to run : jdb Foo


C:\Users\test\workspace\sampleJava>jdb Foo
Initializing jdb ...
> stop in Foo.main
Deferring breakpoint Foo.main.
It will be set after the class is loaded.
> run main
run  main
java.io.IOException: Cannot run program "C:\Program": CreateProcess error=2, The system cannot find the file specified
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:470)
        at java.lang.Runtime.exec(Runtime.java:593)
        at java.lang.Runtime.exec(Runtime.java:466)
        at com.sun.tools.jdi.AbstractLauncher$Helper.launchAndAccept(AbstractLauncher.java:162)
        at com.sun.tools.jdi.AbstractLauncher.launch(AbstractLauncher.java:114)
        at com.sun.tools.jdi.SunCommandLineLauncher.launch(SunCommandLineLauncher.java:217)
        at com.sun.tools.example.debug.tty.VMConnection.launchTarget(VMConnection.java:334)
        at com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:166)
        at com.sun.tools.example.debug.tty.Commands.commandRun(Commands.java:589)
        at com.sun.tools.example.debug.tty.TTY.executeCommand(TTY.java:474)
        at com.sun.tools.example.debug.tty.TTY.<init>(TTY.java:707)
        at com.sun.tools.example.debug.tty.TTY.main(TTY.java:1011)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
        at java.lang.ProcessImpl.create(Native Method)
        at java.lang.ProcessImpl.<init>(ProcessImpl.java:177)
        at java.lang.ProcessImpl.start(ProcessImpl.java:28)
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:452)
        ... 11 more

Fatal error:
Unable to launch target VM.

据我所知：jdb无法加载该类。我需要为jdb设置任何路径设置。（我试图遵循这个tutorial）

我想我错过了一件非常基本的事情。尝试谷歌，但同样的想法，但我无法解决问题。

My PATH=%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\cygwin\;C:\Users\test\Downloads\adt-bundle-windows-x86-20130219\adt-bundle-windows-x86-20130219\sdk\platform-tools\;"C:\Program Files\Java\jre1.6.0_16\bin";"C:\Program Files\Java\jre6\bin";"C:\Program Files\Java\jdk1.6.0_45\bin";C:\Users\test\Downloads\adt-bundle-windows-x86-20130219\adt-bundle-windows-x86-20130219\sdk\tools;"C:\Program Files\Graphviz2.26.3\bin";"C:\Program Files\Graphviz2.26.3\bin"

C：\ Users \ test \ workspace \ sampleJava＆gt; java -version java版“1.6.0_45” Java（TM）SE运行时环境（版本1.6.0_45-b06） Java HotSpot（TM）客户端VM（版本20.45-b01，混合模式，共享）

C：\ Users \ test \ workspace \ sampleJava＆gt; javac -version javac 1.6.0_45

操作系统：Windows 7

Answer 1

出现同样的问题 - 似乎是因为jdk安装在路径中有空格的文件夹中，即“Program Files” - 将jdk安装移动到c：\ jdk，问题就消失了

致命错误：无法启动目标VM

1 个答案: