Java ThreadLocalRandom longs() method

The longs() method of Java ThreadLocalRandom class returns an effectively unlimited stream of pseudorandom long values. This method overrides longs in class Random.

Syntax:

Parameter:

Returns:

This method returns a stream of pseudorandom long values.

Example

  import java.util.concurrent.ThreadLocalRandom;    public class ThreadLocalRandomLongsExample1 {      public static void main(String[] args) {            // Returns a stream of pseudorandom long values         System.out.println(“stream of pseudorandom long value is: ” +ThreadLocalRandom.current().longs());      }  }  

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Output:

stream of pseudorandom long value is: [email protected]

Java ThreadLocalRandom longs(long streamSize) method

The longs(long streamSize) method of Java ThreadLocalRandom class returns a stream producing the given streamSize number of pseudorandom long values. This method overrides longs in class Random.

Syntax:

Parameter:

streamSize – It is the number of values to generate

Returns:

This method returns a stream of long values.

Exception:

IllegalArgumentException: This exception will throw if the streamSize is less than zero.

Example 1

  import java.util.concurrent.ThreadLocalRandom;        public class ThreadLocalRandomLongsExample4 {        public static void main(String[] args) {                        // Returns a stream of longs values                System.out.println(“stream of longs value is: ” +ThreadLocalRandom.current().longs(1500));        }    }  

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Output:

stream of longs value is: [email protected]

Example 2

  import java.util.concurrent.ThreadLocalRandom;        public class ThreadLocalRandomLongsExample5 {        public static void main(String[] args) {                        // Returns a stream of longs values            System.out.println(“stream of long value is: ” +ThreadLocalRandom.current().longs(-20));        }    }  

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Output:

Exception in thread "main" java.lang.IllegalArgumentException: size must be non-negative  at java.base/java.util.concurrent.ThreadLocalRandom.longs(Unknown Source)  at tests.ThreadLocalRandomLongsExample1.main(ThreadLocalRandomLongsExample2.java:7)

Java ThreadLocalRandom longs(long randomNumberOrigin, long randomNumberBound) method

The longs(long randomNumberOrigin, long randomNumberBound) method of Java ThreadLocalRandom class returns an effectively unlimited stream of pseudorandom long values. Each value must conform to the given origin (inclusive) and bound (exclusive). This method overrides longs in class Random.

Syntax:

Parameter:

randomNumberOrigin: It is the origin (inclusive) of each random value.

randomNumberBound: It is the bound (exclusive) of each random value.

Returns:

This method returns a stream of pseudorandom long values.

Exception:

IllegalArgumentException: This exception will throw if randomNumberOrigin is greater than or equal to randomNumberBound.

Example 1

  import java.util.concurrent.ThreadLocalRandom;    public class ThreadLocalRandomLongsExample2 {      public static void main(String[] args) {            // Returns a stream of pseudorandom long values         System.out.println(“stream of pseudorandom long value is: ” +ThreadLocalRandom.current().longs(20, 30));      }  }  

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Output:

stream of pseudorandom long value is: [email protected]

Example 2

  import java.util.concurrent.ThreadLocalRandom;    public class ThreadLocalRandomLongsExample3 {      public static void main(String[] args) {            // Returns exception because origin is greater than bound        System.out.println(“stream of pseudorandom long value is: ” +ThreadLocalRandom.current().longs(30, 10));      }  }  

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Output:

Exception in thread "main" java.lang.IllegalArgumentException: bound must be greater than origin  at java.base/java.util.concurrent.ThreadLocalRandom.longs(Unknown Source)  at tests.ThreadLocalRandomLongsExample2.main(ThreadLocalRandomLongsExample2.java:7)

Java ThreadLocalRandom longs(long streamSize, long randomNumberOrigin, long randomNumberBound) method

The longs(long streamSize, long randomNumberOrigin, long randomNumberBound) method of Java ThreadLocalRandom class returns a stream producing the given streamSize number of pseudorandom long values. Each value must conform to the given origin (inclusive) and bound (exclusive). This method overrides longs in class Random.

Syntax:

  public LongStream longs(long streamSize, long randomNumberOrigin, long randomNumberBound)  

Parameter:

streamSize – It is the number of values to generate

randomNumberOrigin – It is the origin (inclusive) of each random value

randomNumberBound – It is the bound (exclusive) of each random value

Returns:

This method returns a stream of pseudorandom long values.

Exception:

IllegalArgumentException: This exception will throw if the streamSize is less than zero.
IllegalArgumentException: This exception will throw if the randomNumberOrigin is greater than or equal to randomNumberBound.

Example 1

  import java.util.concurrent.ThreadLocalRandom;        public class ThreadLocalRandomLongsExample6 {        public static void main(String[] args) {                        // Returns a stream of pseudorandom long values                   System.out.println(“stream of pseudorandom long value is: ” +ThreadLocalRandom.current().longs(10, 20, 30));        }    }   

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Output:

stream of pseudorandom long value is: [email protected]

Example 2

  import java.util.concurrent.ThreadLocalRandom;        public class ThreadLocalRandomLongsExample7 {        public static void main(String[] args) {                        // Returns exception because steamSize is negative                  System.out.println(“stream of pseudorandom double value is: ” +ThreadLocalRandom.current().doubles(-10, 20, 30));        }    }    

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Output:

Exception in thread "main" java.lang.IllegalArgumentException: size must be non-negative  at java.base/java.util.concurrent.ThreadLocalRandom.doubles(Unknown Source)  at tests.ThreadLocalRandomLongsExample2.main(ThreadLocalRandomLongsExample1.java:7)

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Java ThreadLocalRandom longs() Method with Examples

Java ThreadLocalRandom longs() method

Syntax:

Parameter:

Returns:

Example

Java ThreadLocalRandom longs(long streamSize) method

Syntax:

Parameter:

Returns:

Exception:

Example 1

Example 2

Java ThreadLocalRandom longs(long randomNumberOrigin, long randomNumberBound) method

Syntax:

Parameter:

Returns:

Exception:

Example 1

Example 2

Java ThreadLocalRandom longs(long streamSize, long randomNumberOrigin, long randomNumberBound) method

Syntax:

Parameter:

Returns:

Exception:

Example 1

Example 2

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