Java

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.