setseed

随机类setSeed()方法 (Random Class setSeed() method)

• setSeed() method is available in java.util package.

  setSeed()方法在java.util包中可用。

• setSeed() method is used to set the given seed of this Random Number Generator.

  setSeed()方法用于设置此随机数生成器的给定种子。

• setSeed() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  setSeed()方法是一个非静态方法，只能使用类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• setSeed() method does not throw an exception at the time of set seed.

  setSeed()方法在设置种子时不会引发异常。

Syntax:

句法：

    public void setSeed(long ss);

Parameter(s):

参数：

• long ss – represents the seed.

  long ss –表示种子。

Return value:

返回值：

The return type of this method is void, it returns nothing.

此方法的返回类型为void ，不返回任何内容。

Example:

例：

// Java program to demonstrate the example 
// of void setSeed(long ss) method of 
// Random
import java.util.*;
public class SetSeedOfRandom {
public static void main(String args[]) {
// Instantiates Random object
Random ran = new Random();
// Display random value before seed
System.out.println("ran: " + ran.nextInt());
// By using setSeed(50) method is
// to set the seed value of this
// Random Value Generator by the given
// seed parameter
ran.setSeed(50);
// Display random value after seed
System.out.println("ran.setSeed(50): " + ran.nextInt());
}
}

Output

输出量

RUN 1:
ran: -983822763
ran.setSeed(50): -1160871061
RUN 2:
ran: -460404281
ran.setSeed(50): -1160871061
RUN 3:
ran: 316540002
ran.setSeed(50): -1160871061

翻译自: https://www.includehelp.com/java/random-setseed-method-with-example.aspx

setseed