ignition override

When a method is specified in a class, if multiple methods are compatible with the call (for example, there are two methods with the same name, and their parameters are compatible with the passed parameters ), then the C # compiler selects the best method for calling. The following methods will be compatible: C # Copy code Public class derived: Base {public override void dowork (int param) {} public void dowork (double PARAM ){}} InDerivedCalled i

Os:windows7 x64Jdk:jdk-8u131-windows-x64Ide:eclipse Oxygen Release (4.7.0)Code:Abstract class can have ordinary member method abstract class Person {//non abstract method public void SayHello () {}//abstract method public abstract void study ();p ublic abstract void play (); Class Javaer extends person{//subclasses must override all abstract methods in the abstract class public void study () {SYSTEM.OUT.PRINTLN ("learning Java");} public void Play ()

In Java, why would you want to override the ToString method? Let me illustrate this with a simple example.Define a TEST5 class first. and write its Get,set method.Package test5;public class Test5 {private String name;Private String sex;private int No;public void Show () {System.out.println ("This is my way of showing!!!! ");}Public String GetName () {return name;}public void SetName (String name) {THIS.name = name;}Public String Getsex () {return sex;

Premise: A subclass inherits the parent classSubclasses can override the methods of the parent class if the parent class does not apply the child class after inheriting the parent class (override)Overridden rule: Requires the return value type of the subclass method, the method name, the argument list, and the method of the parent classThe access rights of the subclass method cannot be less than the access

Syntax of the methodmodifier Returns a value type method name (parameter type argument name) { ... Method Body ... return return value;}Overloading (overload)/** * Overloaded Overload: * In the same class, multiple methods have the same name, but the parameter types and the number of parameters must be different. * The return value may or may not be the same, but the return value alone cannot be used to determine whether a method exists. */public class Example {public void print ()

overloading, overwriting, and hiding: ★ For member functions of the same name in the class hierarchy, there are 3 relationships: overloaded (overload), overwrite (override) and hide (hide, oversee), clearing 3 relationships, helping to write high-quality code. Overloading:The concept of overloading is relatively simple and onlyin the same class definitionA member function with the same name exists onlyoverloadedRelationship, the main feature is

Background:MyEclipse in the @override error, you must remove this flag, the project can be compiled through, but this method is to rewrite, why the error?Reason:jdk1.5 (5.0) Before this, this is the bug,jdk1.6 (6.0) version after the bug was fixed.Workaround:The JDK1.6 version can be used to solve the project when compiling.Specific operation:MyEclipse in Window-->preferences-->java-->compiler-->configure project specific Settings--Select project-- >o

protected override void Render (HtmlTextWriter writer) { The final output of the HTML to compress and then output StringWriter html = new StringWriter (); HtmlTextWriter TW = new HtmlTextWriter (HTML); Base. Render (TW); String outhtml = html. ToString (); outhtml = Regex.Replace (outhtml, "\\s+", ""); outhtml = Regex.Replace (outhtml, ">\\s+outhtml = outhtml. Trim (); Writer. Write (outhtml); } protected overrid