Instead of hunting for JInitiator 1.3.1.22, consider:
C:\Program Files\Oracle\JInitiator 1.3.1.22No. Chrome and Firefox dropped NPAPI support in 2017. Only Internet Explorer 8 or older or Pale Moon browser (with NPAPI flags) can run it. oracle jinitiator 1.3.1.22 download
Running JInitiator 1.3.1.22 on a modern OS is an exercise in patience. The installer was built for Windows 98/2000/XP. Use this proven process: The Legacy of JInitiator: A Short Story Oracle
File size: 6.84 MB (7,174,144 bytes) Filename: jinit13122.exe Double-click the file