JSDF personnel are basically the same as civil servant.
Here is
to the list but since it is in Japanese I'll write it down.
Monthly salary
3~ star Admirals and generals ¥720,000〜1,198,000
2 star Admirals and generals ¥521,700〜912,000
Captain and Colonel ¥400,500〜558,900
Commander and Lieutenant Colonel ¥346,700〜504,900
Lieutenant Commander and Major ¥319,000〜480,400
Lieutenant first class and Captain(JGSDF/JASDF) ¥269,900〜458,500
Lieutenant Junior class and 1st Lieutenant ¥244,000〜450,800
Ensign and Second Lieutenant ¥236,000〜446,900
Warrant Officer ¥227,300〜444,400
Chief Petty Officer Sergeant Major Senior Master Sergeant ¥221,500〜432,900
Petty Officer 1st Class Master Sergeant ¥221,300〜418,100
Petty Officer 2nd Class Sergeant First Class Technical Sergeant ¥212,700〜387,100
Petty Officer 3rd Class Sergeant Staff Sergeant ¥189,600〜314,300
Leading Seaman Leading Private Airman 1st Class ¥174,300〜235,200
Seaman Private First Class Airman 2nd Class ¥174,300〜190,100
Seaman Apprentice Private Airman 3rd Class ¥159,500〜170,700
The difference is based on age, base of operation, qualification, etc.