def printSystemProp() {
  val sysProp = JavaConverters.propertiesAsScalaMap(System.getProperties)

  val (maxKeyLength, avgValueLength) = {
    val info = sysProp.foldLeft((0, 0))( // maxKeyLength, avgValueLength
      (b, a) => {
        val maxKeyLength = if (a._1.length > b._1) a._1.length else b._1
        val sumValueLength = b._2 + a._2.length
        (maxKeyLength, sumValueLength)
      }
    )
    (info._1, info._2 / sysProp.size)
  }

  // define padding and width of columns
  val leftPadding = 10
  val rightPadding = 10
  val widthKeyColumn = maxKeyLength + leftPadding
  val widthValueColumn = avgValueLength + rightPadding

  // print table
  printBorder()
  for ((k, v) <- sysProp; if v.length <= avgValueLength && v.length > 10) {
    // for simplification print such 10 < values <= avgValueLength
    printRow(k, v)
  }
  printBorder()

  /**
    * Print one row for key and value.
    *
    * @param key   Key
    * @param value Value
    */
  def printRow(key: String, value: String) = {
    print("|" + key + " " * (widthKeyColumn - key.length) + "|"
      + value + " " * (widthValueColumn - value.length) + "|\n")
  }

  /**
    * Print border (top, bottom)
    */
  def printBorder() = {
    print("|" + "-" * widthKeyColumn + "|" + "-" * widthValueColumn + "|\n")
  }
}

|---------------------------------------|-------------------------------------------------------------------------------|
|java.runtime.name                      |Java(TM) SE Runtime Environment                                                |
|sun.boot.library.path                  |F:\Tools\Java\jdk1.8.0_111\jre\bin                                             |
|java.vm.vendor                         |Oracle Corporation                                                             |
|java.vendor.url                        |http://java.oracle.com/                                                        |
|java.vm.name                           |Java HotSpot(TM) 64-Bit Server VM                                              |
|sun.java.launcher                      |SUN_STANDARD                                                                   |
|sun.os.patch.level                     |Service Pack 1                                                                 |
|java.vm.specification.name             |Java Virtual Machine Specification                                             |
|user.dir                               |C:\ProgramData\Microsoft\Windows\Start Menu\Programs\JetBrains                 |
|java.runtime.version                   |1.8.0_111-b14                                                                  |
|java.awt.graphicsenv                   |sun.awt.Win32GraphicsEnvironment                                               |
|java.endorsed.dirs                     |F:\Tools\Java\jdk1.8.0_111\jre\lib\endorsed                                    |
|java.io.tmpdir                         |C:\Users\aboznyak\AppData\Local\Temp\                                          |
|java.vm.specification.vendor           |Oracle Corporation                                                             |
|java.specification.name                |Java Platform API Specification                                                |
|sun.management.compiler                |HotSpot 64-Bit Tiered Compilers                                                |
|user.home                              |C:\Users\aboznyak                                                              |
|java.awt.printerjob                    |sun.awt.windows.WPrinterJob                                                    |
|java.home                              |F:\Tools\Java\jdk1.8.0_111\jre                                                 |
|java.specification.vendor              |Oracle Corporation                                                             |
|awt.toolkit                            |sun.awt.windows.WToolkit                                                       |
|java.ext.dirs                          |F:\Tools\Java\jdk1.8.0_111\jre\lib\ext;C:\Windows\Sun\Java\lib\ext             |
|java.vendor                            |Oracle Corporation                                                             |
|java.vendor.url.bug                    |http://bugreport.sun.com/bugreport/                                            |
|sun.io.unicode.encoding                |UnicodeLittle                                                                  |
|---------------------------------------|-------------------------------------------------------------------------------|