maybe not, due to the fact that at java sea, the largest ship
japenese sent out was only heavy cruiser and no battleship nor
carriers. A more powerful force of battleship and battlecruiser
could eaily win against the IJN and also given the fact the the
japan's navy is too preoccupied, maybe not much ships could be sent
to java sea.
however, i'm not too sure whether battle of java sea the japanese
ships had air cover or not...but likely with prince of wales and
repulse, the allies may win and java may not fall to the japs, then
british may be able to retake singapore sooner before 1945.