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  1. import java.util.ArrayList;
  2. import java.util.List;
  3. import java.util.stream.Collectors;
  4.  
  5. class Teste {
  6.     public static void main(String[] args) {
  7.         List<Object[]> lista = new ArrayList<>();
  8.         Object[] dados = new Object[3];
  9.         dados[0] = 1;
  10.         dados[1] = 20;
  11.         dados[1] = "cristiano";
  12.         lista.add(dados);
  13.  
  14.         dados = new Object[3]; 
  15.         dados[0] = 2;
  16.         dados[1] = 40;
  17.         dados[1] = "fulano";
  18.         lista.add(dados);
  19.  
  20.         List<Integer> lista2 = lista.stream()
  21.                 .map(x -> (Integer) x[0])
  22.                 .collect(Collectors.toList());
  23.  
  24.         System.out.println(lista2);
  25.     }
  26. }
Success #stdin #stdout 0.12s 4386816KB
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https://ideone.com/LjQdbf
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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