「Java」「API」Java.lang.System.getProperties()
針對System.getProperty(String key) The java.lang.System.getProperties() method determines the current system properties. The current set of system properties for use by the getProperty(String key) method is returned as a Properties object. If there is no current set of system properties, a set of system properties is first created and initialized. This set of system properties includes values for the following keys − Key Description of Associated Value java.version Java Runtime Environment version java.vendor Java Runtime Environment vendor java.vendor.url Java vendor URL java.home Java installation directory java.vm.specification.version Java Virtual Machine specification version java.vm.specification.vendor Java Virtual Machine specification vendor java.vm.specification.name Java Virtual Machine specification name java.vm.version Java Virtual Machine implementation version java.vm.vendor Java Virtual Machine implementation vendor java.