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First look at the example:ImportJava.util.*; classFruit { PublicString toString () {return"Fruit"; } } classAppleextendsFruit { PublicString toString () {return"Apple"; } } classperson { PublicString toString () {return"Person"; } } classclassname//main class, file name Classname.java voidshow_1 (T t) {SYSTEM.OUT.PRINTLN ("Show_1" +t.tostring ()); } voidshow_2 (e e) {System.out.println ("S

First, ActionThe action encapsulates a method that has no parameters and no return value, and the declaration prototype is:1 public delegate void Action ();Use the following:1 public void Alert () 2 {3 Console.WriteLine ("This is a Warning"); 4 }5 6 Action T = new action (Alert); instantiate an action delegate of 7 T ();If the statement in the delegate's method is short, you can also use the LAMB

first, analyze the idea of the program :1: start with the first element of S, match the 1th element in T, and if equal, match the i+1 element of s with the 2nd element in T, and so on, if all elements of T match, then return position I; otherwise, execute 2;2: i++; If the first element of S is ' + ', that is, the string terminator, stop execution; otherwise, repe

In the CLR environment, several commonly used delegate actions, actions, func, and predicate are provided. Generally, when delegate is used, try not to define another delegate by yourself. The built-in system can meet most of the requirements and make the Code conform to the specifications.1. The method encapsulated by actionaction has no parameters and no return value. The declared prototype is: 1 Public Delegate void action (). Usage: Copy code 1 Public void alert () 2 {3 console. writeline ("

First Look at class, ordinary non-generic class. Note: class is a Java keyword that is used when declaring a Java class; Instances of class classes represent Java Application Runtime classes (class ans enum) or interfaces (interface and annotation) (each Java class runtime behaves as a class object in the JVM, which can be passed the class name. Class, Type. GetClass (), Class.forName ("Class name"), and other methods to get the class object). Arrays are also mapped to classes of class objects,

First, ActionThe action encapsulates a method that has no parameters and no return value, and the declaration prototype is:1 public delegate void Action ();Use the following:1 public void Alert () 2 {3 Console.WriteLine ("This is a Warning"); 4 }5 6 Action T = new action (Alert); instantiate an action delegate of 7 T ();If the statement in the delegate's method is short, you can also use the LAMB

In the CLR environment, several commonly used delegate actions, actions, Func, and Predicate are provided. Generally, when delegate is used, try not to define another delegate by yourself. The built-in system can meet most of the requirements and make the Code conform to the specifications. 1. The method encapsulated by ActionAction has no parameters and no return value. The declared prototype is: 1 public delegate void Action (). Usage: Copy code 1 public void Alert () 2 {3 Console. writeLine (

Today's Summary: today is better than yesterday, but it is still insufficient. Get up at 9 o ' clock in the morning (because it's too cold to climb up) and learn to stay up until 11 o'clock. Completed the task which was not completed yesterday, but today's task has not started at all. This has taught me a truth: Today is the day of completion. Yesterday's things to stay today, today's things can not be finished. Alas. My biggest problem now is to sleep late and get up late. I'm not going to get

what are their differences and limitations? Let me say my understanding. ? extends T ? Extends T describes the upper bounds of the wildcard character, that is, the specific generic parameter needs to satisfy the condition: the generic parameter must be of type T or its subclass, for example: list All three of these actions are valid because the extends number s

VC-terminate thread, exitthread function, te r m I n a t e t h r e a D function, cancel thread, details 6.5 terminate the running of a threadTo terminate the running of a thread, use the following method:• Thread function return (this method is recommended ).• By calling the e x I t h r e a D function, the thread will undo it by itself (it is best not to use thi