java - Have System properties always values -
do system.getproperty("line.separator")
, system.getproperty("os.name")
have values?
or need check return value in code null
?
yes, inserted automatically jvm
do system.getproperty("line.separator")
, system.getproperty("os.name")
have values?
or need check return value in code null
?
yes, inserted automatically jvm
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