Java

mastdesi wrote:

1. Draw a UML representation for the above class hierarchy. Your representation must be accurate in terms of UML representation of the different entities and the relation between them. You are asked to use a software to draw the UML . For more information on UML refer to Section 12.1 of your textbook. No hand-writen or hand drawn diagrams accepted.

jhencer111108 wrote:

Our teacher wants us to make a code for multilevel queue.

public class MultiLevelQueue<T> {

    public MultiLevelQueue() {
        // add any initialisation here
    }

    public void addItem(T item) {
        // insert the item into the correct point of the queue
    }

    public T getNext() {
        // retrieve the next item in the queue
    }
}

Bil1 minBil = new Bil1("VD-12345", "Volvo", 2002, 55, true);

Tor Danielsen wrote:

Bil1 minBil = new Bil1("VD-12345", "Volvo", 2002, 55, true);

Tor Danielsen wrote:

but then the client program ain't approved. the task is to have the values in the class section "Bil1", not client section "Bil1test"

public class Bil1{
	private final String regNr;
	private final String merke;
	private final int årsmodell;
	private final int hastighet;
    private final boolean motorenIGang;
 
    public Bil1() {
        this (null, null, 0, 0 false);
    }

    public Bil1(String regNr, String merke, int årsmodell, int hastighet, boolean motorenIGang){
        this.regNr = regNr;
        this.merke = merke;
        this.årsmodell = årsmodell;
        this.hastighet = hastighet;
        this.motorenIGang = motorenIGang;
    }
 
    public String getRegNr() {
        if (this.regNr == null) {
            return "Ukjent";
        }
        return this.regNr;
    }
 
    public String getMerke() {
        if (this.merke == null) {
            return "Ukjent";
        }
        return this.merke;
    }
 
    public int getÅrsmodell() {
        return this.årsmodell;
    }
 
    public int getHastighet() {
        return this.hastighet;
    }
 
    public boolean getMotorenIGang() {
        return this.motorenIGang;
    }
    
    public String toString() {
        return "Regnr " + this.getRegNr()
        + ", merke " + this.getMerke()
        + ", årsmodell " + this.getÅrsmodell()
        + ", hastighet " + this.getHastighet()
        + ", motorenIGang " + this.getMotorenIGang()
    }

    public int hashCode() {
        return 7 * ((this.getRegNr().hashCode()  +
                9 * this.getMerke()) +
                3 * this.getÅrsmodell()) +
                this.getHastighet() +
                (this.getMotorenIGang()    ? 1 : 0);
    }
        
    public boolean equals(Object obj) {
        if (obj == null || obj.getClass() != this.getClass()) {
            return null();
        }
        Bil1 that = (Bil1)obj;
        
        return this.getRegNr().equals(that.getRegNr()) &&
                this.getMerke().equals(that.getMerke()) &&
                this.getÅrsmodell() == that.getÅrsmodell() &&
                this.getHastighet() == that.getHastighet() &&
                this.getMotorenIGang() == that.getMotorenIGang();
    }
}
 

public class Bil1Test {
  public static void main(String[] args) {
 
    /* 1. programsetning: Lager et Bil1-objekt (med referanse) minBil
     vha. standardkonstruktøren: */
    Bil1 minBil = new Bil1("VD-12345", "Volvo", 2002, 55, true);
 
    /* 2. programsetning: Skriver ut innholdet i minBils objektvariabler: */
    System.out.println(minBill);
  }
}

TorstenH. wrote:

You still need to know for example what a GridLayout is.

David Skelly wrote:

One way to look at it is a move towards the model of something like C#VB, where developers don't need to know how the GUI is constructed, just how to wire the components together and respond to events.