Installing Eclipse on ubuntu is not very complex process, first of all make sure to install Java on your Linux system, Eclipse needs java as pre-requisite , run following command to install java on your ubuntu 19.10 system.
for Java 7
|sudo apt-get install openjdk-7-jdk|
or for Install Java 8 Click links
or for Install Java 9 Click links
or for Install Java 11 Click links
or for Install Java 13 Click links
It might take some moments to download and install java, once the installation is complete, download Eclipse according to your operating system architecture.