public class RandomDemo {
   public static void main( String args[] ){
      // create random object
      Random randomno = new Random();
      
      // get next next pseudorandom value 
      int value = randomno.nextInt();
      
      // check the value  
      System.out.println("Value is: " + value);
   }  
}
 

public int nextInt(int n) 返回大於等於0且小於n的隨機整數

public long nextLong() 返回一個隨機長整型值

public boolean nextBoolean() 返回一個隨機布林型值

public float nextFloat() 返回一個隨機浮點型值

public double nextDouble() 返回一個隨機雙精度型值

public double nextGaussian() 返回一個概率密度為高斯分佈的雙精度值