java 如何在 NetBeans 中生成随机数？
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How to generate random number in NetBeans?
提问by Ben
I'm trying to generate a random between 1 and 100 in NetBeans, but what I used before in Eclipse isn't working. I can't seem to use Random, as it is underined in red: "cannot find symbol." Please show me how.
我试图在 NetBeans 中生成 1 到 100 之间的随机数，但我之前在 Eclipse 中使用的不起作用。我似乎无法使用 Random，因为它用红色下划线表示：“找不到符号。” 请告诉我怎么做。
Random x = new Random();
int n = x.nextInt(100);//random number 1-100
回答by Elliott Frisch
Either use the fully qualified class name (or add an import). The importmight look something like,
要么使用完全限定的类名（或添加一个import）。在import可能看起来像，
import java.util.Random;
while the fully qualified class name is java.util.Randomlike
而完全限定的类名java.util.Random就像
java.util.Random x = new java.util.Random();
Also, for a numberin the range 1 - 100 you need
此外，对于number1 - 100 范围内的a ，您需要
// int n = x.nextInt(100);//random number 1-100
int n = 1 + x.nextInt(100);
Because nextInt(int)(per the Javadoc)
因为nextInt(int)（根据 Javadoc）
Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive)
返回一个伪随机的、均匀分布在 0（含）和指定值（不含）之间的 int 值
回答by Juned Ahsan
Most likely you are missing the import:
您很可能错过了导入：
import java.util.Random;
回答by Noob From Mars
For all errors like "cannot find symbol.", you can quickly hit Ctrl + Shift + Ito import all missing library (in Eclipse it is Ctrl + Shift + O).
You also should search on the Internet for this error first, the answer everywhere.
对于诸如“ cannot find symbol.”之类的所有错误，您可以快速Ctrl + Shift + I导入所有丢失的库（在 Eclipse 中是Ctrl + Shift + O）。你也应该先在互联网上搜索这个错误，到处都有答案。
回答by Saheb Swaich
This is how to make it generate a random number, I know it is longer but its much easier to understand.
这是如何让它生成一个随机数，我知道它更长但更容易理解。
import java.util.Random;
class (INSERTCLASSNAME){
public static void main(String[] args){
Random random = new Random();
int number;
for(int counter=1; counter<=1;counter++){
number = 1+random.nextInt(100);
System.out.println(number);
}
}
}
