Don't delete those folders since they are probably installed. Instead since there are currently security problems with java you might want to uninstall them using the control panel. You probably don't need java installed unless you are a programmer. Very few websites actually require java to be installed on the client side which would be your computer.
As for showing what is eating your space try this program: WinDirStat - Windows Directory Statistics
As for showing what is eating your space try this program: WinDirStat - Windows Directory Statistics
My Computers
System One System Two
-
- Operating System
- Windows 8.1 Industry Pro x64
- Manufacturer/Model
- HP Pavillion Elite HPE-250f
- CPU
- Intel i7 860 Quad core 2.8 ghz
- Memory
- 8 gb
- Graphics card(s)
- ATI Radeon HD 5770 1 gb ram
- Monitor(s) Displays
- Alienware 25 AW2521HF
- Screen Resolution
- 1920x1080 &1680x1050
- Hard Drives
- 1 TB x2
- Other Info
- https://www.cnet.com/products/hp-pavilion-elite-hpe-250f/
-
- Operating System
- Windows 2012 R2 Data center/Linux Mint
- Manufacturer/Model
- Dell Poweredge T140
- CPU
- i3 9100 3.6GHz, 8M cache, 4C/4T
- Memory
- 8GB 2666MT/s DDR4 ECC UDIMM
- Screen Resolution
- 1680x1050
- Hard Drives
- 1 TB & 360 GB x2
- Other Info
- https://www.dell.com/en-us/work/shop/productdetailstxn/poweredge-t140?~ck=bt