java - How to set the javac compiler flags to generate 1.7 bytecode? -

-

i trying follow instructions on this page install google app engine on ubuntu 16.04.

i stuck on third point in 'installing on linux' is:

the app engine java sdk requires java 7 bytecode level. can use either java 7 or java 8; sure set javac compiler flags generate 1.7 bytecode:

-source 1.7 -target 1.7

what have tried is:

javac -source 1.7 -target 1.7

but gives me error

javac: no source files
use -help list of possible options

the command given below give same error

javac -source 1.7

however javac -target 1.7 gives following error

javac: target release 1.7 conflicts default source release 1.8

any advice on how tackle problem highly appreciated.

further information:

javac -version gives javac 1.8.0_92 output.

java -version gives output:

java version "1.8.0_92"
java(tm) se runtime environment (build 1.8.0_92-b14)
java hotspot(tm) 64-bit server vm (build 25.92-b14, mixed mode)

you use -source 1.7 -target 1.7 options when compiling code. example:

javac -source 1.7 -target 1.7 myprogram.java

will compile source file myprogram.java , produce java 7-compatible class file myprogram.class.

it's not execute javac -source 1.7 -target 1.7 once , setting remembered somewhere on works in java 7 mode (which how seem think works).


Comments

Post a Comment

Popular posts from this blog

matlab - error with cyclic autocorrelation function -

-
Image
i'm trying code cyclic autocorrelation function in matlab follows: t=0:(n-1); t=t*te; i_alpha=0; tau=-n2*te:te:n2*te; alpha=-1/2:1/n:1/2; ryy_cl=zeros(length(alpha),length(tau)); alpha=alpha/te ind_tau=0; i_alpha=i_alpha+1; k=tau ind_tau=ind_tau+1; if k>0 % ryy_cl(i_alpha,ind_tau)=1/length(sig_bin_syl_mod(1:end- k))*sum((sig_bin_syl_mod(1:end-k)).*sig_bin_syl_mod(k+1:end)).*exp(1i*2*pi*alpha*t(1+k:length(sig_bin_syl_mod(1:end)))); ryy_cl(i_alpha,ind_tau)=(1/n)*sum((sig_bin_syl_mod(1:end-k)).*sig_bin_syl_mod(k+1:end)).*exp(-1i*2*pi*alpha*t(1:end-k)); else ryy_cl(i_alpha,ind_tau)=(1/n)*sum((sig_bin_syl_mod(1-k:end)).*sig_bin_syl_mod(1:end+k)).*exp(-1i*2*pi*alpha*t(1-k:end)); end end end i'm getting errors, , doesn't show expecting. according below formulae, how can fix it? the code provided incomplete, difficult confidently reproduce error. in particular, haven't de...
Read more

django - (fields.E300) Field defines a relation with model 'AbstractEmailUser' which is either not installed, or is abstract -

-
i trying create customuser django project email username , add radio button truck , company. in registration process email-id registered per truck or company. mentioned radio button 'tag' , add manytomany field tag in emailuser model. when makemigrations, raising error : (fields.e300) field defines relation model 'abstractemailuser' either not installed, or abstract. i quite new django , not sure whether have created correct code wants. please me solving this. here code, models.py: import django django.contrib.auth.models import ( abstractbaseuser, baseusermanager, permissionsmixin) django.core.mail import send_mail django.db import models django.utils import timezone django.utils.translation import ugettext_lazy _ class emailusermanager(baseusermanager): """custom manager emailuser.""" def _create_user(self, email, password, is_staff, is_superuser, **extra_fields): """create , save emailus...
Read more

c# - What is a good .Net RefEdit control to use with ExcelDna? -

-
i using exceldna , c# build suite of tools. part of forms i'd want user select cells/ranges workbook. i've got application.inputbox route working...but doesn't cool... i haven't read many things excel's refedit control, , see many have in past written workarounds, in (shudder) vba or vb.net. however, none of these seem recent... best approach/control refedit functionality on form run via exceldna (if applicable)? the refedit sample project of github explores different ways of dealing threading when showing form excel add-in, main issue making refedit control .net add-in. check page links various other implementations: https://github.com/excel-dna/exceldna/wiki/links-about-refedit
Read more