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Java (not to be confused with JavaScript) is a class-based, object-oriented, strongly typed, reflective language and run-time environment (JRE). Java programs are compiled to bytecode and run in a virtual machine (JVM) enabling a "write once, run anywhere" (WORA) methodology.
1
vote
Java group list of maps by value and insert as grouped list
Here is one way to get it in a single pass.
Map<String, Map<String, Object>> tempMap = new HashMap<String, Map<String, Object>>();
transformedData.forEach(i -> {
Double currentEffort = (Double) i …