正确的应该去掉void: packageStudent;importmyutils.*;publicclassStudentextendsCommon{publicStudent(){ }publicStudent(String name,intage,intmoney){super(name, age, money); }publicvoidgetSomeMoney(intmoney){inthasMoney=super.getMoney();super.setMoney(hasMoney + money); } }...
classProduct{publicStringname;publicProduct(){this("Mouse");this.name="Keyboard";}publicProduct(Stringname){this.name=name;}} When you move the constructor call below thethis.nameassignment, Java will throw thecall to this must be first statement in constructor: classProduct{publicStringname;publ...
classPerson{privateintage;publicPerson() { System.out.println("wu can gou zao"); }publicPerson(inta) {age=a; System.out.println("you can gou zao"); System.out.println("age shi"+a); this(); } } 报错:Constructor call must be the first statement in a constructor 即 构造函数调用必须...
UsinggetClass()in constructor in this manner willalwaysresult in a compilation error, sincethiscannot be referenced beforesuper()has been called. Main.java:17: error: cannot referencethisbefore supertype constructor has been calledsuper(getClass().getClassLoader());// should not call getClass() ...
Using getClass() in constructor in this manner willalwaysresult in a compilation error, since thiscannot be referenced before super() has been called. Main.java:17: error: cannot reference this before supertype constructor has been called ...
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I wrote about the NetBeans hint “Overridable Method Call in Constructor” in the blog post Seven Indispensable NetBeans Java Hints. In this post, I look at why having an overridable method called from a parent class’s constructor is not a good idea. The next class, Employee, is a ...
Namespace: Java.Lang.Invoke Assembly: Mono.Android.dll A ConstantCallSite is a CallSite whose target is permanent, and can never be changed.[Android.Runtime.Register("java/lang/invoke/ConstantCallSite", ApiSince=26, DoNotGenerateAcw=true)] public class ConstantCallSite : Java.Lang.Invoke....
Java documentation for java.lang.invoke.CallSite. Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License. Constructors 展开表 CallSite(IntPtr, JniHandleOwners...
Methods inherited from java.lang.Objectclone equals finalize getClass hashCode notify notifyAll toString wait wait wait Constructor Details FunctionCall public FunctionCall(String name, String arguments) Creates an instance of FunctionCall class. Parameters: name - the name value to set. arguments -...