1. On new installation Java rpms not exists on SuSE Linux. To verify run below command:
# rpm -qa | grep java
libjavascriptcoregtk-4_0-18-2.12.5-1.12.x86_64
2. Check openjdk package in repository:
# zypper se openjdk-
Loading repository data...
Reading installed packages...
S | Name | Summary | Type
--+-----------------------------+-----------------------------------------------------+--------
| java-1_7_0-openjdk-demo | OpenJDK 7 Demos | package
| java-1_7_0-openjdk-devel | SUSE's implementation of the OpenJDK 7 Developmen-> | package
| java-1_7_0-openjdk-headless | OpenJDK 7 runtime environment without X, audio an-> | package
| java-1_8_0-openjdk-demo | OpenJDK 8 Demos | package
| java-1_8_0-openjdk-devel | OpenJDK 8 Development Environment | package
| java-1_8_0-openjdk-headless | OpenJDK 8 Runtime Environment | package
3. Check openjdk package with version:
# zypper se -s openjdk-
Loading repository data...
Reading installed packages...
S | Name | Type | Version | Arch | Repository
--+-----------------------------+---------+----------------+--------+------------------
| java-1_7_0-openjdk-demo | package | 1.7.0.141-42.1 | x86_64 | SLES12-SP3-12.3-0
| java-1_7_0-openjdk-devel | package | 1.7.0.141-42.1 | x86_64 | SLES12-SP3-12.3-0
| java-1_7_0-openjdk-headless | package | 1.7.0.141-42.1 | x86_64 | SLES12-SP3-12.3-0
| java-1_8_0-openjdk-demo | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
| java-1_8_0-openjdk-devel | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
| java-1_8_0-openjdk-headless | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
4. Check Java Package information:
# zypper info java-1_8_0-openjdk-devel
Loading repository data...
Reading installed packages...
Information for package java-1_8_0-openjdk-devel:
-------------------------------------------------
Repository : SLES12-SP3-12.3-0
Name : java-1_8_0-openjdk-devel
Version : 1.8.0.131-26.3
Arch : x86_64
Vendor : SUSE LLC <https://www.suse.com/>
Support Level : Level 2
Installed Size : 21.4 MiB
Installed : No
Status : not installed
Source package : java-1_8_0-openjdk-1.8.0.131-26.3.src
Summary : OpenJDK 8 Development Environment
Description :
The OpenJDK 8 development tools.
5. Check below folders:
# ls /usr/lib64/java
ls: cannot access '/usr/lib64/java': No such file or directory
# ls /usr/lib64/jvm
ls: cannot access '/usr/lib64/jvm': No such file or directory
6. Check environment Setting:
# env | grep -i java
#
7. Now install openjdk rpms by "zypper" command:
# zypper in java-1_8_0-openjdk-devel
Loading repository data...
Reading installed packages...
Resolving package dependencies...
The following 5 NEW packages are going to be installed:
java-1_8_0-openjdk java-1_8_0-openjdk-devel java-1_8_0-openjdk-headless javapackages-tools
libgif6
5 new packages to install.
Overall download size: 65.9 MiB. Already cached: 0 B. After the operation, additional 105.9 MiB
will be used.
Continue? [y/n/...? shows all options] (y): y
Retrieving package javapackages-tools-2.0.1-6.10.x86_64 (1/5), 50.8 KiB (129.9 KiB unpacked)
Retrieving package libgif6-5.0.5-12.1.x86_64 (2/5), 21.0 KiB ( 35.4 KiB unpacked)
Retrieving package java-1_8_0-openjdk-headless-1.8.0.131-26.3.x86_64
(3/5), 48.7 MiB ( 83.8 MiB unpacked)
Retrieving package java-1_8_0-openjdk-1.8.0.131-26.3.x86_64
(4/5), 289.2 KiB (565.7 KiB unpacked)
Retrieving package java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
(5/5), 16.8 MiB ( 21.4 MiB unpacked)
Checking for file conflicts: ............................................................[done]
(1/5) Installing: javapackages-tools-2.0.1-6.10.x86_64 ..................................[done]
(2/5) Installing: libgif6-5.0.5-12.1.x86_64 .............................................[done]
(3/5) Installing: java-1_8_0-openjdk-headless-1.8.0.131-26.3.x86_64 .....................[done]
Additional rpm output:
update-alternatives: using /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java to provide /usr/bin/java (java) in auto mode
update-alternatives: using /usr/lib64/jvm/jre-1.8.0-openjdk to provide /usr/lib64/jvm/jre-openjdk (jre_openjdk) in auto mode
update-alternatives: using /usr/lib64/jvm/jre-1.8.0-openjdk to provide /usr/lib64/jvm/jre-1.8.0 (jre_1.8.0) in auto mode
(4/5) Installing: java-1_8_0-openjdk-1.8.0.131-26.3.x86_64 ..............................[done]
(5/5) Installing: java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64 ........................[done]
Additional rpm output:
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk/bin/javac to provide /usr/bin/javac (javac) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-openjdk (java_sdk_openjdk) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-1.8.0 (java_sdk_1.8.0) in auto mode
8. Now Java rpms exists:
# rpm -qa | grep -i java
java-1_8_0-openjdk-headless-1.8.0.131-26.3.x86_64
typelib-1_0-JavaScriptCore-4_0-2.12.5-1.12.x86_64
java-1_8_0-openjdk-1.8.0.131-26.3.x86_64
javapackages-tools-2.0.1-6.10.x86_64
libjavascriptcoregtk-4_0-18-2.12.5-1.12.x86_64
java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
9. Have not set Java environment, /usr/lib64/java folder has created, /usr/lib64/jvm created and have no. of link files and folders:
# env | grep -i java
# ls -l /usr/lib64/java
total 0
# ls -l /usr/lib64/jvm
total 4
lrwxrwxrwx 1 root root 26 Oct 29 17:21 java -> /etc/alternatives/java_sdk
lrwxrwxrwx 1 root root 32 Oct 29 17:21 java-1.8.0 -> /etc/alternatives/java_sdk_1.8.0
lrwxrwxrwx 1 root root 24 Oct 29 17:21 java-1.8.0-openjdk -> java-1.8.0-openjdk-1.8.0
drwxr-xr-x 7 root root 4096 Oct 29 17:21 java-1.8.0-openjdk-1.8.0
lrwxrwxrwx 1 root root 34 Oct 29 17:21 java-openjdk -> /etc/alternatives/java_sdk_openjdk
lrwxrwxrwx 1 root root 21 Oct 29 17:21 jre -> /etc/alternatives/jre
lrwxrwxrwx 1 root root 27 Oct 29 17:21 jre-1.8.0 -> /etc/alternatives/jre_1.8.0
lrwxrwxrwx 1 root root 28 Oct 29 17:21 jre-1.8.0-openjdk -> java-1.8.0-openjdk-1.8.0/jre
lrwxrwxrwx 1 root root 29 Oct 29 17:21 jre-openjdk -> /etc/alternatives/jre_openjdk
10. Now all java command is coming:
# java (Press Tab to check)
java javac javadoc javah javap
11. Now if need to remove openjdk rpms, follow below steps:
# rpm -qa | grep java-1_8_0-openjdk-devel
java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
# rpm -ev java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
Preparing packages...
java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
update-alternatives: warning: alternative /usr/lib64/jvm/java-1.8.0-openjdk/bin/javac (part of link group javac) doesn't exist; removing from list of alternatives
update-alternatives: warning: /etc/alternatives/javac is dangling; it will be updated with best choice
update-alternatives: warning: alternative /usr/lib64/jvm/java-1.8.0-openjdk (part of link group java_sdk_openjdk) doesn't exist; removing from list of alternatives
update-alternatives: warning: /etc/alternatives/java_sdk_openjdk is dangling; it will be updated with best choice
update-alternatives: warning: alternative /usr/lib64/jvm/java-1.8.0-openjdk (part of link group java_sdk_1.8.0) doesn't exist; removing from list of alternatives
update-alternatives: warning: /etc/alternatives/java_sdk_1.8.0 is dangling; it will be updated with best choice
# rpm -qa | grep java-1_8_0-openjdk-devel
#
12. After removing now list of link file is less as compared to above:
# ls -l /usr/lib64/jvm
total 4
drwxr-xr-x 3 root root 4096 Oct 29 17:25 java-1.8.0-openjdk-1.8.0
lrwxrwxrwx 1 root root 21 Oct 29 17:21 jre -> /etc/alternatives/jre
lrwxrwxrwx 1 root root 27 Oct 29 17:21 jre-1.8.0 -> /etc/alternatives/jre_1.8.0
lrwxrwxrwx 1 root root 28 Oct 29 17:21 jre-1.8.0-openjdk -> java-1.8.0-openjdk-1.8.0/jre
lrwxrwxrwx 1 root root 29 Oct 29 17:21 jre-openjdk -> /etc/alternatives/jre_openjdk
13. Now other java command is not exist like above:
# java (Press tab key)
.cache. .config. .dbus. .gnupg. .targetcli. bin. inst-sys.
14. After installing openjdk again all folders, files and symbolic link come:
# zypper se java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
Loading repository data...
Reading installed packages...
S | Name | Type | Version | Arch | Repository
--+--------------------------+---------+----------------+--------+------------------
| java-1_8_0-openjdk-devel | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
# zypper in java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
Loading repository data...
Reading installed packages...
Resolving package dependencies...
The following NEW package is going to be installed:
java-1_8_0-openjdk-devel
1 new package to install.
Overall download size: 16.8 MiB. Already cached: 0 B. After the operation, additional 21.4 MiB
will be used.
Continue? [y/n/...? shows all options] (y): y
Retrieving package java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
(1/1), 16.8 MiB ( 21.4 MiB unpacked)
Checking for file conflicts: ............................................................[done]
(1/1) Installing: java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64 ........................[done]
Additional rpm output:
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk/bin/javac to provide /usr/bin/javac (javac) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-openjdk (java_sdk_openjdk) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-1.8.0 (java_sdk_1.8.0) in auto mode
15. Now all java command is available:
# java (Press tab key)
java javac javadoc javah javap
Note : After reboot the server all Java Environment automatically set by /etc/profile.d/alljava.sh:
# env | grep -i java
JRE_HOME=/usr/lib64/jvm/java/jre
JAVA_BINDIR=/usr/lib64/jvm/java/bin
JAVA_HOME=/usr/lib64/jvm/java
SDK_HOME=/usr/lib64/jvm/java
JDK_HOME=/usr/lib64/jvm/java
JAVA_ROOT=/usr/lib64/jvm/java
# cat /etc/profile.d/alljava.sh
#
# /etc/profile.d/alljava.sh
#
# send feedback to http://bugs.opensuse.org
#
# This script sets some environment variables for default java.
# Affected variables: JAVA_BINDIR, JAVA_HOME, JRE_HOME,
# JDK_HOME, SDK_HOME
#
for JDIR in /usr/lib64/jvm /usr/lib/jvm /usr/java/latest /usr/java; do
if ! test -d $JDIR; then
continue
fi
for JPATH in $JDIR $JDIR/java `ls -I 'java' -I 'jre' -d $JDIR/* 2>/dev/null` $JDIR/jre; do
if ! test -x $JPATH/bin/java; then
continue
fi
export JAVA_BINDIR=$JPATH/bin
export JAVA_ROOT=$JPATH
export JAVA_HOME=$JPATH
unset JDK_HOME
unset SDK_HOME
case "$JPATH" in
*jre*)
[ -z "$JRE_HOME" ] && export JRE_HOME=$JPATH
;;
*)
[ -z "$JRE_HOME" ] && export JRE_HOME=$JPATH/jre
# it is development kit
if [ -x $JPATH/bin/javac ] ; then
export JDK_HOME=$JPATH
export SDK_HOME=$JPATH
unset JPATH
break 2; # we found a JRE + SDK -- don't look any further
fi
;;
esac
done
unset JPATH
done
unset JDIR
#
# rpm -qa | grep java
libjavascriptcoregtk-4_0-18-2.12.5-1.12.x86_64
2. Check openjdk package in repository:
# zypper se openjdk-
Loading repository data...
Reading installed packages...
S | Name | Summary | Type
--+-----------------------------+-----------------------------------------------------+--------
| java-1_7_0-openjdk-demo | OpenJDK 7 Demos | package
| java-1_7_0-openjdk-devel | SUSE's implementation of the OpenJDK 7 Developmen-> | package
| java-1_7_0-openjdk-headless | OpenJDK 7 runtime environment without X, audio an-> | package
| java-1_8_0-openjdk-demo | OpenJDK 8 Demos | package
| java-1_8_0-openjdk-devel | OpenJDK 8 Development Environment | package
| java-1_8_0-openjdk-headless | OpenJDK 8 Runtime Environment | package
3. Check openjdk package with version:
# zypper se -s openjdk-
Loading repository data...
Reading installed packages...
S | Name | Type | Version | Arch | Repository
--+-----------------------------+---------+----------------+--------+------------------
| java-1_7_0-openjdk-demo | package | 1.7.0.141-42.1 | x86_64 | SLES12-SP3-12.3-0
| java-1_7_0-openjdk-devel | package | 1.7.0.141-42.1 | x86_64 | SLES12-SP3-12.3-0
| java-1_7_0-openjdk-headless | package | 1.7.0.141-42.1 | x86_64 | SLES12-SP3-12.3-0
| java-1_8_0-openjdk-demo | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
| java-1_8_0-openjdk-devel | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
| java-1_8_0-openjdk-headless | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
4. Check Java Package information:
# zypper info java-1_8_0-openjdk-devel
Loading repository data...
Reading installed packages...
Information for package java-1_8_0-openjdk-devel:
-------------------------------------------------
Repository : SLES12-SP3-12.3-0
Name : java-1_8_0-openjdk-devel
Version : 1.8.0.131-26.3
Arch : x86_64
Vendor : SUSE LLC <https://www.suse.com/>
Support Level : Level 2
Installed Size : 21.4 MiB
Installed : No
Status : not installed
Source package : java-1_8_0-openjdk-1.8.0.131-26.3.src
Summary : OpenJDK 8 Development Environment
Description :
The OpenJDK 8 development tools.
5. Check below folders:
# ls /usr/lib64/java
ls: cannot access '/usr/lib64/java': No such file or directory
# ls /usr/lib64/jvm
ls: cannot access '/usr/lib64/jvm': No such file or directory
6. Check environment Setting:
# env | grep -i java
#
7. Now install openjdk rpms by "zypper" command:
# zypper in java-1_8_0-openjdk-devel
Loading repository data...
Reading installed packages...
Resolving package dependencies...
The following 5 NEW packages are going to be installed:
java-1_8_0-openjdk java-1_8_0-openjdk-devel java-1_8_0-openjdk-headless javapackages-tools
libgif6
5 new packages to install.
Overall download size: 65.9 MiB. Already cached: 0 B. After the operation, additional 105.9 MiB
will be used.
Continue? [y/n/...? shows all options] (y): y
Retrieving package javapackages-tools-2.0.1-6.10.x86_64 (1/5), 50.8 KiB (129.9 KiB unpacked)
Retrieving package libgif6-5.0.5-12.1.x86_64 (2/5), 21.0 KiB ( 35.4 KiB unpacked)
Retrieving package java-1_8_0-openjdk-headless-1.8.0.131-26.3.x86_64
(3/5), 48.7 MiB ( 83.8 MiB unpacked)
Retrieving package java-1_8_0-openjdk-1.8.0.131-26.3.x86_64
(4/5), 289.2 KiB (565.7 KiB unpacked)
Retrieving package java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
(5/5), 16.8 MiB ( 21.4 MiB unpacked)
Checking for file conflicts: ............................................................[done]
(1/5) Installing: javapackages-tools-2.0.1-6.10.x86_64 ..................................[done]
(2/5) Installing: libgif6-5.0.5-12.1.x86_64 .............................................[done]
(3/5) Installing: java-1_8_0-openjdk-headless-1.8.0.131-26.3.x86_64 .....................[done]
Additional rpm output:
update-alternatives: using /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java to provide /usr/bin/java (java) in auto mode
update-alternatives: using /usr/lib64/jvm/jre-1.8.0-openjdk to provide /usr/lib64/jvm/jre-openjdk (jre_openjdk) in auto mode
update-alternatives: using /usr/lib64/jvm/jre-1.8.0-openjdk to provide /usr/lib64/jvm/jre-1.8.0 (jre_1.8.0) in auto mode
(4/5) Installing: java-1_8_0-openjdk-1.8.0.131-26.3.x86_64 ..............................[done]
(5/5) Installing: java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64 ........................[done]
Additional rpm output:
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk/bin/javac to provide /usr/bin/javac (javac) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-openjdk (java_sdk_openjdk) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-1.8.0 (java_sdk_1.8.0) in auto mode
8. Now Java rpms exists:
# rpm -qa | grep -i java
java-1_8_0-openjdk-headless-1.8.0.131-26.3.x86_64
typelib-1_0-JavaScriptCore-4_0-2.12.5-1.12.x86_64
java-1_8_0-openjdk-1.8.0.131-26.3.x86_64
javapackages-tools-2.0.1-6.10.x86_64
libjavascriptcoregtk-4_0-18-2.12.5-1.12.x86_64
java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
9. Have not set Java environment, /usr/lib64/java folder has created, /usr/lib64/jvm created and have no. of link files and folders:
# env | grep -i java
# ls -l /usr/lib64/java
total 0
# ls -l /usr/lib64/jvm
total 4
lrwxrwxrwx 1 root root 26 Oct 29 17:21 java -> /etc/alternatives/java_sdk
lrwxrwxrwx 1 root root 32 Oct 29 17:21 java-1.8.0 -> /etc/alternatives/java_sdk_1.8.0
lrwxrwxrwx 1 root root 24 Oct 29 17:21 java-1.8.0-openjdk -> java-1.8.0-openjdk-1.8.0
drwxr-xr-x 7 root root 4096 Oct 29 17:21 java-1.8.0-openjdk-1.8.0
lrwxrwxrwx 1 root root 34 Oct 29 17:21 java-openjdk -> /etc/alternatives/java_sdk_openjdk
lrwxrwxrwx 1 root root 21 Oct 29 17:21 jre -> /etc/alternatives/jre
lrwxrwxrwx 1 root root 27 Oct 29 17:21 jre-1.8.0 -> /etc/alternatives/jre_1.8.0
lrwxrwxrwx 1 root root 28 Oct 29 17:21 jre-1.8.0-openjdk -> java-1.8.0-openjdk-1.8.0/jre
lrwxrwxrwx 1 root root 29 Oct 29 17:21 jre-openjdk -> /etc/alternatives/jre_openjdk
10. Now all java command is coming:
# java (Press Tab to check)
java javac javadoc javah javap
11. Now if need to remove openjdk rpms, follow below steps:
# rpm -qa | grep java-1_8_0-openjdk-devel
java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
# rpm -ev java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
Preparing packages...
java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
update-alternatives: warning: alternative /usr/lib64/jvm/java-1.8.0-openjdk/bin/javac (part of link group javac) doesn't exist; removing from list of alternatives
update-alternatives: warning: /etc/alternatives/javac is dangling; it will be updated with best choice
update-alternatives: warning: alternative /usr/lib64/jvm/java-1.8.0-openjdk (part of link group java_sdk_openjdk) doesn't exist; removing from list of alternatives
update-alternatives: warning: /etc/alternatives/java_sdk_openjdk is dangling; it will be updated with best choice
update-alternatives: warning: alternative /usr/lib64/jvm/java-1.8.0-openjdk (part of link group java_sdk_1.8.0) doesn't exist; removing from list of alternatives
update-alternatives: warning: /etc/alternatives/java_sdk_1.8.0 is dangling; it will be updated with best choice
# rpm -qa | grep java-1_8_0-openjdk-devel
#
12. After removing now list of link file is less as compared to above:
# ls -l /usr/lib64/jvm
total 4
drwxr-xr-x 3 root root 4096 Oct 29 17:25 java-1.8.0-openjdk-1.8.0
lrwxrwxrwx 1 root root 21 Oct 29 17:21 jre -> /etc/alternatives/jre
lrwxrwxrwx 1 root root 27 Oct 29 17:21 jre-1.8.0 -> /etc/alternatives/jre_1.8.0
lrwxrwxrwx 1 root root 28 Oct 29 17:21 jre-1.8.0-openjdk -> java-1.8.0-openjdk-1.8.0/jre
lrwxrwxrwx 1 root root 29 Oct 29 17:21 jre-openjdk -> /etc/alternatives/jre_openjdk
13. Now other java command is not exist like above:
# java (Press tab key)
.cache. .config. .dbus. .gnupg. .targetcli. bin. inst-sys.
14. After installing openjdk again all folders, files and symbolic link come:
# zypper se java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
Loading repository data...
Reading installed packages...
S | Name | Type | Version | Arch | Repository
--+--------------------------+---------+----------------+--------+------------------
| java-1_8_0-openjdk-devel | package | 1.8.0.131-26.3 | x86_64 | SLES12-SP3-12.3-0
# zypper in java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
Loading repository data...
Reading installed packages...
Resolving package dependencies...
The following NEW package is going to be installed:
java-1_8_0-openjdk-devel
1 new package to install.
Overall download size: 16.8 MiB. Already cached: 0 B. After the operation, additional 21.4 MiB
will be used.
Continue? [y/n/...? shows all options] (y): y
Retrieving package java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64
(1/1), 16.8 MiB ( 21.4 MiB unpacked)
Checking for file conflicts: ............................................................[done]
(1/1) Installing: java-1_8_0-openjdk-devel-1.8.0.131-26.3.x86_64 ........................[done]
Additional rpm output:
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk/bin/javac to provide /usr/bin/javac (javac) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-openjdk (java_sdk_openjdk) in auto mode
update-alternatives: using /usr/lib64/jvm/java-1.8.0-openjdk to provide /usr/lib64/jvm/java-1.8.0 (java_sdk_1.8.0) in auto mode
15. Now all java command is available:
# java (Press tab key)
java javac javadoc javah javap
Note : After reboot the server all Java Environment automatically set by /etc/profile.d/alljava.sh:
# env | grep -i java
JRE_HOME=/usr/lib64/jvm/java/jre
JAVA_BINDIR=/usr/lib64/jvm/java/bin
JAVA_HOME=/usr/lib64/jvm/java
SDK_HOME=/usr/lib64/jvm/java
JDK_HOME=/usr/lib64/jvm/java
JAVA_ROOT=/usr/lib64/jvm/java
# cat /etc/profile.d/alljava.sh
#
# /etc/profile.d/alljava.sh
#
# send feedback to http://bugs.opensuse.org
#
# This script sets some environment variables for default java.
# Affected variables: JAVA_BINDIR, JAVA_HOME, JRE_HOME,
# JDK_HOME, SDK_HOME
#
for JDIR in /usr/lib64/jvm /usr/lib/jvm /usr/java/latest /usr/java; do
if ! test -d $JDIR; then
continue
fi
for JPATH in $JDIR $JDIR/java `ls -I 'java' -I 'jre' -d $JDIR/* 2>/dev/null` $JDIR/jre; do
if ! test -x $JPATH/bin/java; then
continue
fi
export JAVA_BINDIR=$JPATH/bin
export JAVA_ROOT=$JPATH
export JAVA_HOME=$JPATH
unset JDK_HOME
unset SDK_HOME
case "$JPATH" in
*jre*)
[ -z "$JRE_HOME" ] && export JRE_HOME=$JPATH
;;
*)
[ -z "$JRE_HOME" ] && export JRE_HOME=$JPATH/jre
# it is development kit
if [ -x $JPATH/bin/javac ] ; then
export JDK_HOME=$JPATH
export SDK_HOME=$JPATH
unset JPATH
break 2; # we found a JRE + SDK -- don't look any further
fi
;;
esac
done
unset JPATH
done
unset JDIR
#
