|
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.vm.name
|
Java Virtual Machine implementation name
|
|
java.specification.version
|
Java Runtime Environment specification version
|
|
java.specification.vendor
|
Java Runtime Environment specification vendor
|
|
java.specification.name
|
Java Runtime Environment specification name
|
|
java.class.version
|
Java class format version number
|
|
java.class.path
|
Java class path
|
|
java.library.path
|
List of paths to search when loading libraries
|
|
java.io.tmpdir
|
Default temp file path
|
|
java.compiler
|
Name of JIT compiler to use
|
|
java.ext.dirs
|
Path of extension directory or directories
|
|
os.name
|
Operating system name
|
|
os.arch
|
Operating system architecture
|
|
os.version
|
Operating system version
|
|
file.separator
|
File separator ("/" on UNIX)
|
|
path.separator
|
Path separator (":" on UNIX)
|
|
line.separator
|
Line separator ("\n" on UNIX)
|
|
user.name
|
User's account name
|
|
user.home
|
User's home directory
|
|
user.dir
|
User's current working directory
|
相关推荐
除了`System.getProperty`之外，Java还提供了`getProperties`方法，它返回一个`Properties`对象，包含所有的系统属性。这在需要一次性获取所有系统属性的情况下非常有用，但同时也需要注意性能问题，因为获取所有...
参考官方客户端『掘金』，本项目仅仅用户学习目的,在Android Studio下使用单元测试,以及使用开源库Rxjava + Retrofit 等进行快速开发 单元测试 ...def BUGHD_ApiToken = properties.getProperty('bu
return properties.getProperty(key); } } ``` #### 3. 解析代码 - **导入必要的类**：导入了`java.io.InputStream`、`java.util.Properties`和`org.apache.log4j.Logger`。其中，`InputStream`用于读取文件输入...
例如，`String value = properties.getProperty("key")` 或者 `String value = properties.getProperty("key", "default_value")`，后者在键不存在时返回默认值。 - **遍历键值对**：使用 `propertyNames()` 方法...
String password = properties.getProperty("password"); String email = properties.getProperty("email"); // 输出属性值 System.out.println("Name: " + name); System.out.println("Password: " + password); ...
String value1 = properties.getProperty("key1"); ``` - **通过Raw资源**：将文件放入`res/raw`目录，然后通过`Resources`类读取。示例： ```java Resources resources = getResources(); InputStream ...
return new PasswordAuthentication(properties.getProperty("mail.smtp.user"), properties.getProperty("mail.smtp.password")); } }); ``` 接下来，我们构建一封邮件。这包括创建一个`MimeMessage`对象，并...
System.out.println(object.toString() + ":" + properties.getProperty(object.toString())); } ``` **2. 写入properties配置文件** 1.2.1 初始化`Properties`对象和`FileOutputStream`：创建`Properties`对象，...
- `getProperty(String key)`方法用来从`Properties`对象获取信息 ```java String value = prop.getProperty("key"); ``` 3. **修改和添加属性** - `setProperty(String key, String value)`方法可以设置键值...
nextGroup = properties.getProperty("nextGroup"); firstPage = properties.getProperty("firstPage"); lastPage = properties.getProperty("lastPage"); is.close(); } } catch (IOException e) { e....
basicDS.setDriverClassName(properties.getProperty("jdbc.driverClassName")); basicDS.setUrl(properties.getProperty("jdbc.url")); basicDS.setUsername(properties.getProperty("jdbc.username")); ...
String property1Value = customProperties.getProperty1(); int property2Value = customProperties.getProperty2(); // 使用属性... } } ``` 在`doSomething`方法中，我们直接通过`customProperties`对象获取...
String password = properties.getProperty("password"); ``` #### 3. 建立数据库连接 使用`DriverManager.getConnection()`方法建立数据库连接： ```java Connection con = DriverManager.getConnection(url, ...
System.out.println(key + " : " + properties.getProperty(key)); } ``` 这段代码会枚举并打印出Properties对象中的所有键值对。 c. 添加或修改键值： ```java URL url = ClassLoader.getSystemResource(...
Integer.parseInt(properties.getProperty("redis.port")), 0, properties.getProperty("redis.password")); ``` 有了JedisPool，我们就可以通过borrowObject()方法获取一个Jedis实例，执行操作后记得归还： ```...
transport.connect(properties.getProperty("mail.from"), properties.getProperty("mail.password")); transport.sendMessage(message, message.getAllRecipients()); transport.close(); ``` 这里假设你使用的是...
- 通过调用`Properties.getProperty(String key)`方法，我们可以根据给定的键获取对应的值。如果找不到对应的键，则返回null。 - 示例代码： ```java String value = props.getProperty("database.url"); ...
System.out.println(key + " : " + properties.getProperty(key)); } // 修改键值对 properties.setProperty("key", "new_value"); // 保存修改 File file = new File(ClassLoader.getSystemResource("info....
properties.getProperty("jdbc.username"), properties.getProperty("jdbc.password") ); } catch (IOException e) { throw new RuntimeException("Failed to initialize data source", e); } } public ...