问题描述
Octave 3.8.2，OS X 10.10.4
我用了
ml_jar_version=javaMethod('getProperty','java.lang.System','java.version');
ml_jar_version=['Java ' ml_jar_version];
检查java版本，我得到了
ml_jar_version = Java 1.6.0_65
但是，我希望Octave使用JDK 1.7，因此我输入了
setenv("JAVA_HOME","/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home");
但ml_jar_version没有改变。
我的问题是：如何使Octave使用JDK 1.7？
编辑1 ：我的Octave是通过自制软件安装的。 我相信自制软件只是下载了预编译的二进制文件。 以下是我的Octave安装的配置：
homebrew/science/octave: stable 3.8.2 (bottled), HEAD
a high-level interpreted language for numerical computations.
https://www.gnu.org/software/octave/index.html
/usr/local/Cellar/octave/3.8.2_1 (2111 files, 54M)
Poured from bottle
/usr/local/Cellar/octave/3.8.2_2 (2111 files, 54M) *
Poured from bottle
From: https://github.com/homebrew/homebrew-science/blob/master/octave.rb
==> Dependencies
Build: pkg-config ?, gnu-sed ?
Required: pcre ?, qscintilla2 ?, qt ?, pstoedit ?
Recommended: gnuplot ?, suite-sparse421 ?, readline ?, arpack ?, fftw ?, glpk ?, gl2ps ?, graphicsmagick ?, hdf5 ?, qhull ?, qrupdate ?, epstool ?, ghostscript ?
Optional: openblas ?
==> Options
--with-jit
Use the experimental JIT support (not recommended)
--with-native-graphics
Use native OpenGL/FLTKgraphics (does not work with the GUI)
--with-openblas
Use OpenBLAS instead of native LAPACK/BLAS
--without-arpack
Build without arpack support
--without-check
Skip build-time tests (not recommended)
--without-curl
Do not use cURL (urlread/urlwrite/@ftp)
--without-docs
Don't build documentation
--without-epstool
Build without epstool support
--without-fftw
Do not use FFTW (fft,ifft,fft2,etc.)
--without-ghostscript
Build without ghostscript support
--without-gl2ps
Build without gl2ps support
--without-glpk
Do not use GLPK
--without-gnuplot
Do not use gnuplot graphics
--without-graphicsmagick
Build without graphicsmagick support
--without-gui
Do not build the experimental GUI
--without-hdf5
Do not use HDF5 (hdf5 data file support)
--without-java
Build without java support
--without-qhull
Do not use the Qhull library (delaunay,voronoi,etc.)
--without-qrupdate
Do not use the QRupdate package (qrdelete,qrinsert,qrshift,qrupdate)
--without-readline
Build without readline support
--without-suite-sparse421
Do not use SuiteSparse (sparse matrix operations)
--without-zlib
Do not use zlib (compressed MATLAB file formats)
--HEAD
Install HEAD version
1楼
似乎octave读取符号链接'dafault-java'，这里：/ usr / lib / jvm / default-java
$ls -al
drwxr-xr-x 5 root root 4096 нов 19 21:37 .
drwxr-xr-x 181 root root 12288 нов 19 20:45 ..
lrwxrwxrwx 1 root root 14 нов 19 21:37 default-java -> java-8-openjdk-amd64/
lrwxrwxrwx 1 root root 20 апр 23 2016 java-1.8.0-openjdk-amd64 -> java-8-openjdk-amd64
-rw-r--r-- 1 root root 2600 окт 27 21:06 .java-1.8.0-openjdk-amd64.jinfo
drwxr-xr-x 8 root root 4096 нов 19 20:45 java-7-oracle
-rw-r--r-- 1 root root 2543 нов 19 20:45 .java-7-oracle.jinfo
drwxr-xr-x 7 root root 4096 нов 19 21:37 java-8-openjdk-amd64
drwxr-xr-x 2 root root 4096 нов 16 20:28 openjdk-8
您需要将其更改为指向您的java文件夹：
首先删除它：
$sudo rm default-java
然后创建一个新的符号链接（在我的例子中为java-7-oracle）：
$ln -s java-7-oracle/ default-java
之后它会继续工作。
在八度音阶中：
>> javaMethod('getProperty','java.lang.System','java.version')
ans = 1.7.0_80