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 Classes And Objects.
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Article: Java classes and objects Quizzes: Beginner Intermediate Advanced |
Quiz 1: Objects and methods
What happens when the following program is compiled and run?
public class MyClass {
int a = 4;
int b = 5;
String s = "s";
MyClass(int a, int b, String s) {
this.a = this.a / 2 + a;
System.out.print("-x" + a);
this.s = "p";
System.out.print("-x" + this.b);
this.b += b;
}
void methodA(int m, int n, String s){
a = this.a - m;
b = this.b - n;
s = this.s;
System.out.print("-x" + a + "-x" + b + "-x" + s);
}
void methodB(int a, String s){
this.a = this.a + a;
this.s = "5";
}
public static void main(String[] args){
MyClass mc = new MyClass(1,4,"h");
mc.methodB(4,"k");
mc.methodA(5,8,"w");
}
}
Please, leave your questions, feedback and suggestions in the comments below!SarMaroof.com offers a practical method to learn and improve your Java skills. It avoids unnecessary long boring theoretical explanations, but it uses many exercises and quizzes.
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Article: Java classes and objects 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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Thanks for the great info dog I owe you bigygti.