Question

题目级别：助理工程师【适中】

下面哪个代码片段能生成介于0和0.5之间的随机数？( )

备选答案

Random generator = new Random(); 
double num = generator.nextDouble();

Random generator = new Random(); 
double num = generator.nextDouble() * 0.5;

Random generator = new Random(); 
double num = generator.nextDouble(0.5);

Random generator = new Random(); 
double num = Math.abs(generator.nextDouble()) * 0.5;

解题分析

nextDouble生成0～1之间的随机数。