Problem No: #7 How to use Aggregate Operations with Arrays.stream() Using SummaryStatatistics [Part 2]?

Java 8 :: Streams and Lambda Expressions

/*
 * Problem No: #7
 * Problem Definition: How to use Aggregate Operations with Arrays.stream() Using SummaryStatatistics[Part 2]?
 * 
 * Answer: By Using, 
 * * Answer: By Using, 
 * >  java.util.Arrays: This class contains various methods for manipulating arrays (such as sorting and searching). This class also contains a static factory that allows arrays to be viewed as lists. 
 * 
 * >  IntStream java.util.Arrays.stream(int[] array): Returns a sequential IntStream with the specified array as its source. **array - the array, assumed to be unmodified during use.

> IntSummaryStatistics java.util.stream.IntStream.summaryStatistics()

IntSummaryStatistics summaryStatistics():

Returns an IntSummaryStatistics describing various summary data about the elements of this stream. 

This is a special case of a reduction. 

This is a terminal operation.

Returns: 

an IntSummaryStatistics describing various summary data about the elements of this stream 

> int java.util.IntSummaryStatistics.getMax()

public final int getMax():

Returns the maximum value recorded, or Integer.MIN_VALUE if no values have been recorded.

Returns: 

the maximum value, or Integer.MIN_VALUE if none 

> int java.util.IntSummaryStatistics.getMin()

public final int getMin():

Returns the minimum value recorded, or Integer.MAX_VALUE if no values have been recorded.

Returns: 

the minimum value, or Integer.MAX_VALUE if none 

> double java.util.IntSummaryStatistics.getAverage()

public final double getAverage():

Returns the arithmetic mean of values recorded, or zero if no values have been recorded.

Returns: 

the arithmetic mean of values, or zero if none 

> long java.util.IntSummaryStatistics.getCount()

public final long getCount():

Returns the count of values recorded.

Returns: 

the count of values 

> long java.util.IntSummaryStatistics.getSum()

public final long getSum():

Returns the sum of values recorded, or zero if no values have been recorded.

Returns: 

the sum of values, or zero if none 

* 
 **Same Operations can be applied with LongStream and DoubleStream
 *   
 * Program By: Mr.DIpak SOnar
 * Date : 25th Oct 2016
 */

import java.util.Arrays;

public class StreamWithArrayAFEx {

public static void main(String[] args) {
int intArr[] = new int[7];

intArr[0] = 11;
intArr[1] = 21;
intArr[2] = 31;
intArr[3] = 41;
intArr[4] = 51;
intArr[5] = 61;
intArr[6] = 71;

// Arrays.stream(longArr).forEach(System.out::println);
// To Print Integer Array using Stream

System.out.println("Arrays.stream(intArr).summaryStatistics().getMax(): \t"+
Arrays.stream(intArr).summaryStatistics().getMax());

System.out.println("Arrays.stream(intArr).summaryStatistics().getMin(): \t"+ Arrays.stream(intArr).summaryStatistics().getMin());

System.out.println("Arrays.stream(intArr).summaryStatistics().getAverage(): \t"+
Arrays.stream(intArr).summaryStatistics().getAverage());

System.out.println("Arrays.stream(intArr).summaryStatistics().getCount(): \t"+
Arrays.stream(intArr).summaryStatistics().getCount());

System.out.println("Arrays.stream(intArr).summaryStatistics().getSum(): \t"+
Arrays.stream(intArr).summaryStatistics().getSum());

}
}