Prerequisite : Stream In Java
Using Arrays.stream() :
Syntax :
public static <T> Stream<T> getStream(T[] arr)
{
return Arrays.stream(arr);
}
where, T represents generic type.
Example 1 : Arrays.stream() to convert string array to stream.
// Java code for converting string array// to stream using Arrays.stream()import java.util.*;import java.util.stream.*; class GFG { public static void main(String[] args) { // Converting String array to stream String[] arr = { "Geeks", "for", "Geeks" }; // Using Arrays.stream to convert an // array into Stream Stream<String> stm = Arrays.stream(arr); // Displaying elements in Stream stm.forEach(str -> System.out.print(str + " ")); }} |
Output:
Geeks for Geeks
Example 2 : Arrays.stream() to convert int array to stream.
// Java code for converting string array// to stream using Arrays.stream()import java.util.*;import java.util.stream.*; class GFG { public static void main(String[] args) { // Converting int array to stream int arr[] = { 1, 2, 3, 4, 5 }; IntStream stm = Arrays.stream(arr); stm.forEach(a -> System.out.print(a + " ")); }} |
Output:
1 2 3 4 5
Example 3 : Arrays.stream() to convert long and double arrays to stream.
// Java code for converting string array// to stream using Arrays.stream()import java.util.*;import java.util.stream.*; class GFG { public static void main(String[] args) { // Converting long array to stream long[] arrL = { 3L, 5L, 6L, 8L, 9L }; LongStream stmL = Arrays.stream(arrL); stmL.forEach(number -> System.out.print(number + " ")); System.out.println(); // Converting double array to stream double[] arrD = { 1, 2, 3, 4, 5 }; DoubleStream stmD = Arrays.stream(arrD); stmD.forEach(d -> System.out.print(d + " ")); }} |
Output:
Output:
3 5 6 8 9 1.0 2.0 3.0 4.0 5.0
Using Stream.of(), IntStream.of(), LongStream.of() & DoubleStream.of() :
Syntax :
public static <T> Stream<T> getStream(T[] arr)
{
return Stream.of(arr);
}
where, T represents generic type.
Syntax of other functions is similar
Note : For object arrays, Stream.of() internally uses Arrays.stream().
Example 1 : Arrays.stream() to convert string array to stream.
// Java code for converting string array// to stream using Stream.of()import java.util.*;import java.util.stream.*; class GFG { public static void main(String[] args) { // Converting String array to stream String[] arr = { "Geeks", "for", "Geeks" }; // Using Arrays.stream to convert an // array into Stream Stream<String> stm = Stream.of(arr); // Displaying elements in Stream stm.forEach(str -> System.out.print(str + " ")); }} |
Output:
Geeks for Geeks
Example 2 : Arrays.stream() to convert int array to stream.
// Java code for converting string array// to stream using IntStream.of()import java.util.*;import java.util.stream.*; class GFG { public static void main(String[] args) { // Converting int array to stream int arr[] = { 1, 2, 3, 4, 5 }; IntStream stm = IntStream.of(arr); stm.forEach(a -> System.out.print(a + " ")); }} |
Output:
1 2 3 4 5
Example 3 : Arrays.stream() to convert long and double arrays to stream.
// Java code for converting string array// to stream using DoubleStream.of()import java.util.*;import java.util.stream.*; class GFG { public static void main(String[] args) { // Converting long array to stream long[] arrL = { 3L, 5L, 6L, 8L, 9L }; LongStream stmL = LongStream.of(arrL); stmL.forEach(number -> System.out.print(number + " ")); System.out.println(); // Converting double array to stream double[] arrD = { 1, 2, 3, 4, 5 }; DoubleStream stmD = DoubleStream.of(arrD); stmD.forEach(d -> System.out.print(d + " ")); }} |
Output:
Output:
3 5 6 8 9 1.0 2.0 3.0 4.0 5.0