○在使用this调用本类中的其他构造时,至少一个是不使用this的。不然就会出现如下的错误:recursive constructor invocation 3 使用this表示当前对象 当前对象:当前正在调用方法的对象。 class Person //定义Person类 { public String getInfo() //取得信息 { System.out.println("Person类-->"+this); //直接打印th...
constructorName (listOfArguments) { [constructor body] } 1. 2. 3. 其中constructorName必须和你定义的类的名字相同,listOfArgumengs是构造方法的参数列表,当然,这里也可以不带有任何参数。然后大括号内是我们的方法体。这里提一下,构造方法也可以带有访问控制符,即public、protected、private和default(忽略情况下...
interface (关键字) 接口 ['int?feis]invoke vt. 调用 [in'v?uk]' ( invocation [,inv?u'kei??n])Iterator [java] 迭代器, 迭代程序legal 合法的 ['li:g?l]log n. 日志, 记录 [l?g]native (关键字) ?? ['neitiv]nested [java] 嵌套的 ['nestid]'如:内部类 (nested classes)Object [java...
packagecom.journaldev.constructor;publicclassData{privateStringname;privateintid;//no-args constructorpublicData(){this.name="Default Name";}//one parameter constructorpublicData(Stringn){this.name=n;}//two parameter constructorpublicData(Stringn,inti){this.name=n;this.id=i;}publicStringgetName()...
privatestaticsynchronizedvoidinitSystemClassLoader(){//sclSet变量控制系统类加载器只被初始化调用一次if(!sclSet){//scl就是系统类加载器if(scl!=null)thrownewIllegalStateException("recursive invocation");//sun.misc.Launcher l=sun.misc.Launcher.getLauncher();if(l!=null){//拿到系统类加载器scl=l.get...
RecursiveAction() Constructor for subclasses to call. RecursiveAction(IntPtr, JniHandleOwnership) A constructor used when creating managed representations of JNI objects; called by the runtime. RecursiveAction() Constructor for subclasses to call. C# 复制 [Android.Runtime.Register(".ctor", "()V...
throw new IllegalStateException("recursive invocation"); sun.misc.Launcher l = sun.misc.Launcher.getLauncher(); if (l != null) { Throwable oops = null; //通过Launcher获取ClassLoader scl = l.getClassLoader(); try { scl = AccessController.doPrivileged( ...
sclSet) { if (scl != null) throw new IllegalStateException("recursive invocation"); sun.misc.Launcher l = sun.misc.Launcher.getLauncher(); if (l != null) { Throwable oops = null; scl = l.getClassLoader(); try { scl = AccessController.doPrivileged( new SystemClassLoaderAction(scl))...
);所以如果父类中没有显示的申明不带 参的构造函数，将会有编译错误。- 在constructor里可以用this()/super()调用自己/父类中的其他构造函数，调用自己会有recursive invocation error.注意的是，this();或者super()都必须写在其第一句话，所以，this();和super();显然不能同时被调用。就...
Constructor chaining can be performed in two ways in Java − Within same class− The process can be done by the using of this() keyword for the constructors present in the same class. From base class− by using the super() keyword, we can call the constructor class from the base ...