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Module by: Rune Johansen. E-mail the author

Selektion (if-else)

Til at lave en selektion bruges en såkaldt if-else betingelse. Formålet ved at lave en sådan selektion er, hvis man ønsker at udføre én ting hvis en betingelse er sand, og en anden hvis betingelsen er falsk. If bruges for at sætte en betingelse med en boolsk værdi. Herefter udføres en kommando hvis betingelsen er sand, og else tilføjes til if sætningen, og udføres hvis betingelsen er falsk.

Syntaksen for if-else selektionen er her vist i et simpelt eksempel:

if (betingelse){

kommando hvis sand betingelse;


else {

kommando hvis falsk betingelse;


Selektionen er vist i et mere java relevant eksempel:

if(ginfo.containsKey) {



else {

System.out.println(“Ingen produkter er fundet og slettet”);


Bianca & Rune

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