Two reasons ;-
Japan did not sign the Geneva Convention on the case of prisoner of war (POW's)
The Japanese warrior code is ' win or die' . Surrender to become a POW just doesn't exist in this code.
Because of these two reasons their POW camps were extremely bad.
Internment camps for civilian population were hardly any better.
Human dignity as known in Western Culture , was just unknown to them.
there are 39 diffrent Japanese internment camps
No but the conditions were really bad
See website: Japanese-American internment camps.
No, the Japanese- Americans were not happy about the internment camps in WW2.
Bad
See website: Japanese-American internment camps.
No. The Japanese Internment camps were not hurtful, they simply isolated the Japanese from the rest of the country.
See website: Japanese-American internment
did the japanese internment camps have closer at some point of time?
What are the pros of the Japanese internment camps? to protect what the US saw as a 'threat' after pearl harbor was bombed
See website: Japanese-American internment
Inherently, Japanese Americans were the main victims of the internment camps.