For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/openSUSE_Tumbleweed/security.repo
zypper refresh
zypper install jd-gui
For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/openSUSE_Factory_zSystems/security.repo
zypper refresh
zypper install jd-gui
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/openSUSE_Factory_PowerPC/security.repo
zypper refresh
zypper install jd-gui
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/openSUSE_Factory_ARM/security.repo
zypper refresh
zypper install jd-gui
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/openSUSE_Factory/security.repo
zypper refresh
zypper install jd-gui
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/16.0/security.repo
zypper refresh
zypper install jd-gui
For 15.7 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/15.7/security.repo
zypper refresh
zypper install jd-gui
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/15.6/security.repo
zypper refresh
zypper install jd-gui