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


Comments

Popular posts from this blog

python - Subclassed QStyledItemDelegate ignores Stylesheet -

java - HttpClient 3.1 Connection pooling vs HttpClient 4.3.2 -

SQL: Divide the sum of values in one table with the count of rows in another -