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Java Collections - Arrays.stream() Examples

Java Collections Java Java API 

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Class:

java.util.Arrays

java.lang.Objectjava.lang.Objectjava.util.Arraysjava.util.ArraysLogicBig

Methods:

These methods return a corresponding sequential streams defined in java.util.stream.*. 

public static <T> Stream<T> stream(T[] array)

public static <T> Stream<T> stream(T[] array,
                                   int startInclusive,
                                   int endExclusive)

public static IntStream stream(int[] array)

public static IntStream stream(int[] array,
                               int startInclusive,
                               int endExclusive)

public static LongStream stream(long[] array)

public static LongStream stream(long[] array,
                                int startInclusive,
                                int endExclusive)

public static DoubleStream stream(double[] array)

public static DoubleStream stream(double[] array,
                                  int startInclusive,
                                  int endExclusive)

Examples


package com.logicbig.example.arrays;

import java.util.Arrays;
import java.util.stream.IntStream;

public class StreamExample {

    public static void main(String... args) {
        int[] arr = {1, 2, 3, 4, 5};
        IntStream stream = Arrays.stream(arr);
        stream.forEach(System.out::println);
    }
}

Output

1
2
3
4
5




package com.logicbig.example.arrays;

import java.util.Arrays;
import java.util.stream.LongStream;

public class StreamExample2 {

    public static void main(String... args) {
        long[] arr = {1L, 2, 3, 4, 5};
        LongStream stream = Arrays.stream(arr);
        stream.forEach(System.out::println);
    }
}

Output

1
2
3
4
5




package com.logicbig.example.arrays;

import java.util.Arrays;
import java.util.stream.DoubleStream;

public class StreamExample3 {

    public static void main(String... args) {
        double[] arr = {1.2, 2.2, 3.1, 4.4, 5.3};
        DoubleStream stream = Arrays.stream(arr);
        stream.forEach(System.out::println);
    }
}

Output

1.2
2.2
3.1
4.4
5.3




package com.logicbig.example.arrays;

import java.util.Arrays;
import java.util.stream.Stream;

public class StreamExample4 {

    public static void main(String... args) {
        String[] arr = {"Apple", "banana", "pie"};
        Stream<String> stream = Arrays.stream(arr);
        stream.forEach(System.out::println);
    }
}

Output

Apple
banana
pie

package com.logicbig.example.arrays;

import java.util.Arrays;
import java.util.stream.IntStream;

public class StreamExample5 {

    public static void main(String... args) {
        int[] arr = {1, 2, 3, 4, 5};
        //index based
        IntStream stream = Arrays.stream(arr, 2, 5);
        stream.forEach(System.out::println);
    }
}

Output

3
4
5

See Also