Question

JAVA编辑器报错Exception in thread "main" java.lang.Error: Unresolved compilation problem:

import java.util.*;
import static net.mindview.util.Print.*;
public class whiletest {
Random rand = new Random ();
static boolean JudgeValue ;

static float RandomFloat = rand.nextFloat();{
JudgeValue = RandomFloat < 0.99 ;
return JudgeValue ;
}
public static void main(String[] args) {
while (JudgeValue = false);
System.out.print("RandomFloat =" + RandomFloat );

}
}

刚刚开始学习JAVA没两天，写了一段代码，非常简单，RUN的时候报Exception in thread "main" java.lang.Error: Unresolved compilation problem: at whiletest.main(whiletest.java:13)
可否告知什么地方出现了错误，为何出现了这个错误，如何修改呢？

Answer 1

：异常 in “main”，java.lang.Error，没解决的编译错误，
。。看了一下，，
return 是放在方法里的，这里突然出现个return 很奇怪。
while() 里面的JudgeValue = false是赋值语句永远等于 false，这里白写，很奇怪。
如果楼主只想得到一个随机数的话
import java.util.*;
public class testwhile {
public static void main(String args[]){
Random r = new Random();
System.out.println(r.nextFloat());
}
}
就行了。

Answer 2

import
java.util.Random;

public
class whiletest {

staticbooleanJudgeValue ;

staticfloatRandomFloat = new Random().nextFloat();

static {

JudgeValue = RandomFloat < 0.99;

}

publicstaticvoid main(String[] args) {

while (JudgeValue = false)

;
System.
out.print("RandomFloat =" + RandomFloat);

}
}

Answer 3

import java.util.*;
public class 类名{
import static net.mindview.util.Print.*;
public class whiletest {
Random rand = new Random ();
static boolean JudgeValue ;

static float RandomFloat = rand.nextFloat();{
JudgeValue = RandomFloat < 0.99 ;
return JudgeValue ;
}
public static void main(String[] args) {
while (JudgeValue = false);
System.out.print("RandomFloat =" + RandomFloat );

}
}
}

Answer 4

类型不对，或者编译有问题