The following Java exercise(s) are designed for advanced level developers. If the level is too hard, then I recommend to select an easier one or you might consider reading my article about this topic, which offers a theoretical explanation including more exercises.
Read More: Java Constructors
Article: Java constructors
Quizzes:
Beginner
Intermediate
Advanced
Quiz 1: Using the keyword this and Java constructors.
What is written to the standard output as the result of executing the following code?
public class MyClass {
int x = 2;
int y = 5;
String s = "4";
MyClass() {
x += 3;
y += 1;
this.s = "1";
}
MyClass(int i, int i2) {
this();
this.x += i;
this.y -= i2;
System.out.print("-x" + x + "-x" + y);
}
MyClass(int i, int i2, String s) {
this(i,i2);
this.x -= i;
this.y += i2;
s = this.s;
System.out.print("-x" + s + "-x" + x + "-x" + y);
}
public static void main(String[] args){
MyClass mc1 = new MyClass(4,3,"2");
}
}
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Article: Java constructors Quizzes: Beginner Intermediate Advanced |
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Sar Maroof is graduated from HBO Amsterdam "higher professional education". He is a professional computer programming teacher, gives master classes and publishes technical articles. His experience with developing software started from 2001 and he has worked as a software developer for several big as well as small companies and later as a freelancer. He is the author of Java quizmaster and Build a Java application in 7 days. |
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That’s a nicely made answer to a chlenalging question