If you are using ionic 1 - 3, you need to change the environment variables. I have tested Ionic 3 with other java version other than 1.8, and it didn't work.
The newer java version has a new path created under "System variables" > "Path" on the top.
You can retain 2 java versions and revert back to your current java version (17.0.1) once you have built your app.
You can follow these steps:

1. Download and Install Java SDK 1.8 from the official website.
2. Once installed, it should be saved in C:/Program Files/Java directory
3. Go to your Environment Variables > System variables
4. Click on "New.." to create a new variable.
5. Variable name = JAVA_HOME and Variable value = C:\Program Files\Java\jdk1.8.0_321 or check on your directory.
6. Then double click on "Path" variable under System variables.
7. Click "New" and add %JAVA_HOME%\bin
8. Once created, select the newly created environment and move it to the very top (Make sure that it's above C:\Program Files\Common Files\Oracle\Java\javapath)
   Reverting back to original version
9. Go to System variables and double click on "Path"
10. Remove the newly created variable = %JAVA_HOME%\bin
11. You should get back your original java version.