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How-to GROUP BY list of objects to map in java?

Problem: You need to group list of objects by field to map by object field. You have list of objects and need to group them by some field and get a Map<Field, List&… »

  • 6 years ago
  • how-to, java, collections
  • Comments

How-to split (partition) Collection in java?

Problem You have big Collection of objects and would like to partition by NUMBER elements. As a result you'd like to have Collection with Collection, each of them containing NUMBER elements. For example: You have… »

  • 6 years ago
  • how-to, java, collections
  • Comments
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