Src Code

相关类

Runtime

##Runtime

Runtime runtime = Runtime.getRuntime();

###实现方式

public class Runtime { private static Runtime currentRuntime = new Runtime(); /** * Returns the runtime object associated with the current Java application. */ public static Runtime getRuntime() { return currentRuntime; } private Runtime() {} ...... }

反射对单例的破坏

Class<Runtime> runtimeClass = Runtime.class; Constructor<Runtime> runtimeConstructor = runtimeClass.getDeclaredConstructor(); runtimeConstructor.setAccessible(true); System.out.println(Runtime.getRuntime() == runtimeConstructor.newInstance());

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