windows - Unable to rectify the cause during installation of java and setting java path in batch file -

-

i need install java , set java path. i'm able install java , can see 2 folders in c:\program files (x86)\java i.e jre , jdk .

but when i'm trying set java_path in code can't path on command propmt echo command i.e @echo java_home = %java_home%. though have started scripting today unable rectify i'm missing out ?

here code tried :-

     @echo off      /f %%j in ("java.exe") (      set java_home=%%~dp$path:j      **@echo java_home = %java_home%**     echo "ok1"     pause     )    if %java_home%.==. (    @echo java.exe not found      pause     cd c:\users\pathfinder\desktop    echo "time in"      jdk-6u43-windows-i586.exe /s "/v\"/qn addlocal=all  reboot=suppress javaupdate=0        custom=1\""       timeout /t 10 /nobreak      echo "time out"      set path="c:\program files (x86)\java\jre6\bin";%path%       @echo path= %path%      set java_home="c:\program files (x86)\java\jdk1.6.0_43\bin";%java_home%       **@echo java_home = %java_home%**       pause      ) else (      @echo java_home = %java_home%     pause     )

after 1 time execution of batch file means process completed after double clicking batch file when i'm again double clicking batch file going 'if' condition again i.e " java.exe not found " .

delayed variable expansion: variables parenthesis evaluated before execution.

here can't use setlocal enabledelayedexpansion because need variables out of batch.

so must rewrite batch without variables within parenthesis:

@echo off set java_home= /f %%j in ("java.exe") set java_home=%%~dp$path:j if defined java_home goto :java_found  :java_not_found @echo java.exe not found  pause cd c:\users\pathfinder\desktop echo "time in" jdk-6u43-windows-i586.exe /s "/v\"/qn addlocal=all  reboot=suppress javaupdate=0 custom=1\"" timeout /t 10 /nobreak echo "time out" set path="c:\program files (x86)\java\jre6\bin";%path% @echo path= %path% set java_home="c:\program files (x86)\java\jdk1.6.0_43\bin";%java_home% @echo java_home = %java_home% goto :end  :java_found @echo java_home =  %java_home% echo "ok1" pause @echo java_home = %java_home% pause  :end

i left optimization you.

also check start /wait instead of timeout.


Comments

Post a Comment

Popular posts from this blog

java - activate/deactivate sonar maven plugin by profile? -

-
i use sonar plugin executes if activated in maven profile. sonar runs on every compile. the problem build fail other team members not have sonar application installed locally. pom.xml checked in team members same copy including sonar configuration, don't want them modify purpose of disabling sonar (they might inadvertently check modified copy in). please advise how configure maven (.m2/settings.xml) and/or pom.xml sonar feature can enabled/disabled local profile. here sonar configuration in each project's pom.xml: <plugin> <groupid>org.codehaus.mojo</groupid> <artifactid>sonar-maven-plugin</artifactid> <version>1.0</version> <executions> <execution> <id>make-sonar</id> <phase>compile</phase> <goals> <goal>sonar</goal> </goals> </execution> </executions> ...
Read more

python - TypeError: can only concatenate tuple (not "float") to tuple -

-
i'm new python, question might easy, anyway, patience: as trying call newton-raphson method calculate implied volatility in black-scholes formula call/put option pricing, first thing is, newton method in scipy.optimize seems calculate function's zeros, in black-scholes formula, want function's value option price, not zero. (i'm new here programming, i'm not sure techniques.) should write function things like: def f(sigma, price): return bsformula(s0,k,r,t,q,sigma) - price then, while calling newton method, takes args=() 1 parameter in function, write this: value = newton(bsprice2, 0.5, args=price) but error message: file "bs.py", line 36, in bsimpvol value = newton(bsprice2, 0.5, args=float(price)) file "/usr/lib/python2.7/dist-packages/scipy/optimize/zeros.py", line 143, in newton q0 = func(*((p0,) + args)) typeerror: can concatenate tuple (not "float") tuple could tell me why that? how fix it? apprecia...
Read more

java - What is the difference between String. and String.this. ? -

-
this question has answer here: meaning of .this , .class in java 2 answers i'll straight point. im still learning bit of syntax , want know difference between code is code a: public class buttonz extends jbutton{ public buttonz(){ settext(new string(string.valueof(i))); } } please ignore fact i undeclared, not lost. code b: public class buttonz extends jbutton{ public buttonz(){ settext(new string(string.this.charat(i))); } } what don't yet understand difference in typing string.this , string. i under assumption when use dot operator on class accessing it's static methods(and/or variables if they're not hidden). i have studied little bit , have concluded when using string. accessing string static methods.. when using string.this. i'm accessing methods class buttonz extendi...
Read more