Answers for "get a value in arraylist java"

2

find first element of list java

final Object firstElement = list.stream()
  .findFirst()
  .orElse(new Object()) //Give a default value if there are no elements
  
final Object firstElement = list.stream()
  .findFirst()
  .orElseThrow(() -> new Exception()) //Throw an exception if there are no elements
Posted by: Guest on August-31-2020
1

java first index of an arraylist

ArrayList<Type> array = new ArrayList<Type>();
System.out.printLn(array[0]);
Posted by: Guest on July-31-2020
2

find first element of list java

final Object firstElement = list.stream()
  .findFirst()
  .orElse(new Object()) //Give a default value if there are no elements
  
final Object firstElement = list.stream()
  .findFirst()
  .orElseThrow(() -> new Exception()) //Throw an exception if there are no elements
Posted by: Guest on August-31-2020
1

java first index of an arraylist

ArrayList<Type> array = new ArrayList<Type>();
System.out.printLn(array[0]);
Posted by: Guest on July-31-2020

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