Webjava.util.Random 线程安全,但是在高并发情况下,需要对seed做同步处理,所以冲突越高,性能越低。 ... 出错,我反复查看我的请求地址以及请求体,都没有发现错误 最后反复查看报错信息“bound must be greater than origin”,终于发现 可能是我引用的函数变量边界值 ... WebThe nextDouble (double least, double bound) method of Java ThreadLocalRandom class returns a pseudorandom. It returns the uniformly distributed double value between the given least value and bound. Syntax: public double nextDouble (double least, double bound) Parameter: least - It is the least value. bound - It is the upper bound (exclusive).
java.lang.IllegalArgumentException: bound must be positive
WebOct 2, 2024 · I don't think it's because bound is smaller than origin, I think it's because bound is equal to origin. Bound is exclusive, meaning nextInt (n, n+1) will always return … WebEach value must conform to the given origin (inclusive) and bound (exclusive). This method overrides ints in class Random. Syntax: public IntStream ints (int randomNumberOrigin, int randomNumberBound) Parameter: randomNumberOrigin: It is the origin (inclusive) of each random value. lightube tp home
Java Random doubles() Method - Javatpoint
WebJun 17, 2024 · java.lang.IllegalArgumentException: bound must be positive,翻译过来就是“非法参数异常:约束必须为正“。. 重点抛错是java.lang.IllegalArgumentException: bound must be positive at java.util.Random.nextInt (Random.java:388)。. 我这边出现这个问题主要是new Random ().nextInt (lectureCount); lectureCount值为0 ... WebSep 25, 2016 · String nickAlea = prefixList.get (r.nextInt (prefixList.size ()))+wordList.get (r.nextInt (wordList.size ()))+nameList.get (r.nextInt (nameList.size ()))+suffixList.get (r.nextInt (suffixList.size ())); The argument to nextInt needs to be a positive integer. You will need to find out where you're passing a non-positive input to that method ... WebOct 15, 2024 · (ClassPathXmlApplicationContext.java:85) at com.example.springcontext.Application.main (Application.java:7) Caused by: java.lang.IllegalArgumentException: bound must be greater than origin at java.base/jdk.internal.util.random.RandomSupport.checkRange … lightummy