Scjp test preparation-7

Question -- the execution result of the following code:

Class Hello {String title; int value; Public Hello () {Title + = "world! ";} Public Hello (INT value) {This. value = value; Title = "hello"; Hello () ;}} public class test {public static void main (string [] ARGs) {Hello c = new Hello (5 ); system. out. print (C. title );}}

 

The focus of this question is the Java constructor. Related Knowledge points:

To reference another constructor in one constructor of the class, you must useThisKeyword. Directly Using the constructor method name is treated as a common method.

In this question, the hello () method is used in the second constructor of the Hello class. During compilation, if the corresponding non-constructor method cannot be found in the Hello class, an exception is reported.

The execution result is as follows: