Example - Recude

I. Task
Task: find all terms has 4 categories of adj, adv, noun, verb

• Map records to key-value pairs with key as inflVar and values as distinct categories
• Filter out those does not has specified 4 categories
• Print out results (inflVar) - Distinct & sort

II. Notes

• Java 7 - mutation
• Java 8 -
  • reduce

III. Java Codes

• Ex6_Reduce.java
  => find all terms has 4 categories of adj, adv, noun, verb

IV. Results

• Ex6_Reduce.out.7
  => result from Java 7 - mutation
• Ex6_Reduce.out.7m
  => result from Java 7 - mutation modified
• Ex6_Reduce.out.8
  => result from Java 8 - reduce
• Ex6_Reduce.out.8s
  => result from Java 8 - step by step
• Ex6_Reduce.out.8p
  => result from Java 8 - parallelStream (different order)
• Ex6_Reduce.out.8pc
  => result from Java 8 - parallelStream - collect