returns the keys that are guaranteed to be contained in system.getproperties by default , as specified in the javadoc for that method . concode_field_sep Lock lock concode_elem_sep SystemProperties INSTANCE concode_elem_sep Set<String> IMPORTANT_NON_STANDARD_PROPERTIES concode_elem_sep Set<String> STANDARD_PROPERTIES concode_field_sep String getJavaIoTmpDir concode_elem_sep Set<String> getNonStandardImportantProperties concode_elem_sep String getUserHome concode_elem_sep File getJavaHomeDir concode_elem_sep Map<String,String> asMap concode_elem_sep String getLineSeparator concode_elem_sep String getJavaVersion concode_elem_sep String getUserName concode_elem_sep T withJavaHome concode_elem_sep T withSystemProperty concode_elem_sep SystemProperties getInstance concode_elem_sep File getCurrentDir
Set < String > function ( ) { return STANDARD_PROPERTIES ; }