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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.Arrays;
  4. import java.util.List;
  5. import java.util.stream.Collectors;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main(String[] args) {
  11.  
  12.         List<DbTrans> transList = Arrays.asList(
  13.                 new DbTrans("Troy", "1123", " Savings", 50),
  14.                 new DbTrans("Larry", "4233", " Savings", 200),
  15.                 new DbTrans("Troy", "1123", " Current", 120),
  16.                 new DbTrans("Larry", "4233", " Current", 220)
  17.         );
  18.  
  19.         List<DbTransResponse> collect = transList.stream()
  20.                 .collect(Collectors.groupingBy(DbTrans::getAcct))
  21.                 .values().stream()
  22.                 .map(r -> new DbTransResponse(
  23.                         r.get(0).getName(),
  24.                         r.get(0).getAcct(),
  25.                         r.get(0).getTotal(),
  26.                         r.get(1).getTotal()
  27.                 )).collect(Collectors.toList());
  28.  
  29.         collect.forEach(System.out::println);
  30.  
  31.     }
  32. }
  33.  
  34. class DbTransResponse {
  35.     private String name;
  36.     private String acct;
  37.     private double totalSavings;
  38.     private double totalCurrent;
  39.  
  40.     public DbTransResponse(String name, String acct, double totalSavings, double totalCurrent) {
  41.         this.name = name;
  42.         this.acct = acct;
  43.         this.totalSavings = totalSavings;
  44.         this.totalCurrent = totalCurrent;
  45.     }
  46.  
  47.     public String getName() {
  48.         return name;
  49.     }
  50.  
  51.     public void setName(String name) {
  52.         this.name = name;
  53.     }
  54.  
  55.     public String getAcct() {
  56.         return acct;
  57.     }
  58.  
  59.     public void setAcct(String acct) {
  60.         this.acct = acct;
  61.     }
  62.  
  63.     public double getTotalSavings() {
  64.         return totalSavings;
  65.     }
  66.  
  67.     public void setTotalSavings(double totalSavings) {
  68.         this.totalSavings = totalSavings;
  69.     }
  70.  
  71.     public double getTotalCurrent() {
  72.         return totalCurrent;
  73.     }
  74.  
  75.     public void setTotalCurrent(double totalCurrent) {
  76.         this.totalCurrent = totalCurrent;
  77.     }
  78.  
  79.     @Override
  80.     public String toString() {
  81.         return "DbTransResponse{" +
  82.                 "name='" + name + '\'' +
  83.                 ", acct='" + acct + '\'' +
  84.                 ", totalSavings=" + totalSavings +
  85.                 ", totalCurrent=" + totalCurrent +
  86.                 '}';
  87.     }
  88. }
  89.  
  90. class DbTrans {
  91.     private String name;
  92.     private String acct;
  93.     private String type;
  94.     private double total;
  95.  
  96.     public DbTrans(String name, String acct, String type, double total) {
  97.         this.name = name;
  98.         this.acct = acct;
  99.         this.type = type;
  100.         this.total = total;
  101.     }
  102.  
  103.     public String getName() {
  104.         return name;
  105.     }
  106.  
  107.     public void setName(String name) {
  108.         this.name = name;
  109.     }
  110.  
  111.     public String getAcct() {
  112.         return acct;
  113.     }
  114.  
  115.     public void setAcct(String acct) {
  116.         this.acct = acct;
  117.     }
  118.  
  119.     public String getType() {
  120.         return type;
  121.     }
  122.  
  123.     public void setType(String type) {
  124.         this.type = type;
  125.     }
  126.  
  127.     public double getTotal() {
  128.         return total;
  129.     }
  130.  
  131.     public void setTotal(double total) {
  132.         this.total = total;
  133.     }
  134. }
Success #stdin #stdout 0.14s 2184192KB
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stdin
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stdout
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DbTransResponse{name='Larry', acct='4233', totalSavings=200.0, totalCurrent=220.0}
DbTransResponse{name='Troy', acct='1123', totalSavings=50.0, totalCurrent=120.0}
https://ideone.com/JJIBy3
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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