java object oriented programming interview questions

read the name "# # #" (three #), the city name entered the end, # # #并不是一个城市的名字. If the number of city names to be read is n.Then you will read an integer matrix of nxn. Each number in the first row represents the mileage between the first city in the list of cities and the other city in turn. The mileage between the same city in the table is 0.Finally, you will read the names of two cities.Output format:Output the distance between the two cities.Input Sample:HagzouHugzoujigxng # # # 01108708 1

"abstract Method" in Java is equivalent to the pure virtual function in C ++. 13. constructors do not have multi-state rows (they are actuallyStatic Method, But the static statement is implicit ). 14. If a dynamic binding method is called within the constructor, the member manipulated by the called method may not be initialized (It may cause some difficult-to-discover hidden errors.). Example: Class glyph {void draw () {system. out. println ("glyph

. 05. Object oriented (making of help documentation) The Java specification is done through documentation comments.Format:/**Feature Description Statement@author author@version version@param parameters@return return value*/Each class and a member function that is normally decorated with public is annotated with a document annotation. To generate a document for

) {this.minute.increase (); if (this.minute.getValue () = = 0) { This.hour.increase ();}}} Public String toString () {//returns a strThe value of ING, in the form of "Hh:mm:ss", representing the current time. Each of these values occupies two bits, which is less than two 0. such as "00:01:22". Note that the colon is in Latin, not Chinese. Return String.Format ("%02d:%02d:%02d", This.hour.getValue (), This.minute.getValue (), This.second.getValue ());// Tip: String.Format () can format a string i

compile the source program into a bytecode programJavac Welcome.javaif the compilation succeeds, the bytecode file Welcome.class is generated in the D:\java directory. If unsuccessful, an error message is displayed and the user can modify the error,(5) running the programafter the directory d:\java>, enter Welcome to run the compiled program. (6) observe the program running results and understand the

Java Object-Oriented Programming-general Linux technology-Linux programming and kernel information. The following is a detailed description. The core of Java is object-

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