Lesson: 43 | Convert all the element to UpperCase

Expected Outcome

DEBUG|(BANANA, APPLE, CHERRY)

Code

Solution 1:

List<string> Fruits = new List<string>
{'Banana', 'Apple', 'Cherry'};
    for (String i : Fruits) {
        
        Fruits.set(Fruits.indexof(i), i.toUpperCase());
      
    }
System.debug(Fruits);

Solution 2:

List<string> Fruits = new List<string>{'Banana', 'Apple', 'Cherry'};
List<string> FruitsinUpperCase= new List<string>();

for(String fruit : Fruits){
    fruit=fruit.toUppercase();
    FruitsinUpperCase.add(Fruit);
    
}
System.debug(FruitsinUpperCase);

Video