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 Arrays
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Article: Java arrays Quizzes: Beginner Intermediate Advanced |
Quiz 1: A multi dimensional array
What is written to the standard output as the result of executing the following code?
public class Seat {
private int row;
private int col;
private String status; // f=free, o=occupied, r=registered
Seat[][] hall = new Seat[3 + 1][2 + 1];
Seat(int row, int col) {
this.row = row;
this.col = col;
this.status = "f";
}
public void initializeHall(){
for(int row = 1; row <= 3; row ++ ) {
for(int col = 1; col <= 2; col ++ ) {
hall[row][col] = new Seat(row,col);
if(col > 1) {
hall[row][col].status = "o";
}
if(row == 2) {
hall[row][col].status = "r";
}
}
}
}
public static void main(String[] args){
Seat seat = new Seat(0,0);
seat.initializeHall();
for(int row = 1; row <= 3; row ++ ) {
for(int col = 1; col <= 2; col ++ ) {
System.out.print("-" + seat.hall[row][col].status);
}
}
}
}
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 arrays 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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