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- public static double broj(){
- Scanner sc = new Scanner(System.in);
- Boolean provjera=false;
- double broj = 0;
- while(!provjera){
- System.out.print("Please provide width:");
- String ulaz = sc.next();
- ulaz.trim();
- /*i sad ovaj zadatak traži da se nađe ako je prazan string da se kao kaže da nemože primit praznine a meni ovo kad lupim enter
- u system.in ili par spaceva nikad nije true tj cak mi sc.next to ni ne učita*/
- if(ulaz.isEmpty())
- System.err.println("The input must not be blank.");
- else{
- broj = Double.parseDouble(ulaz);
- if (broj <=0)
- System.err.println("The width must not be negative.");
- else provjera=true;
- }
- }
- sc.close();
- return broj;
- }
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