如何解决错误：';' 预计在 Java 中？
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How to solve error: ';' expected in Java?
提问by Wei Xia
I have a error: ';' expectedissue with my Java code below. I don't know how to solve it?
我的error: ';' expected下面的 Java 代码有问题。不知道怎么解决？
SortThreadand MergeThreadhave been created as a class, and compiled well.
SortThread并且MergeThread已经创建为一个类，并且编译得很好。
The only problem is
唯一的问题是
SortThread t1.join() = new SortThread(a);
SortThread t2.join() = new SortThread(b);
MergeThread m.start() = new MergeThread(t1.get(),t2.get());
These three line codes has error: ';' expectedissues.
这三行代码有error: ';' expected问题。
In this main, it will create two array, a and b. m array will merge a&b, and main will display m.
在这个 main 中，它将创建两个数组，a 和 b。m 数组将合并 a&b，而 main 将显示 m。
Any hints or solutions are very helpful for me.
任何提示或解决方案对我都非常有帮助。
import java.util.Random;
public class Main{
public static void main(String[] args){
Random r = new Random(System.currentTimeMillis());
int n = r.nextInt(101) + 50;
int[] a = new int[n];
for(int i = 0; i < n; i++)
a[i] = r.nextInt(100);
n = r.nextInt(101) + 50;
int[] b = new int[n];
for(int i = 0; i < n; i++)
b[i] = r.nextInt(100);
SortThread t1.join() = new SortThread(a);
SortThread t2.join() = new SortThread(b);
MergeThread m.start() = new MergeThread(t1.get(),t2.get());
System.out.println(Arrays.toString(m.get()));
}
}
采纳答案by Elliott Frisch
You can't call the methods before you finish initializing the variables you're calling.
在完成初始化您正在调用的变量之前，您不能调用这些方法。
SortThread t1.join() = new SortThread(a);
SortThread t2.join() = new SortThread(b);
MergeThread m.start() = new MergeThread(t1.get(),t2.get());
should be something like
应该是这样的
SortThread t1 = new SortThread(a);
t1.start(); // <-- you probably want to start before you join.
SortThread t2 = new SortThread(b);
t2.start();
t1.join();
t2.join();
MergeThread m = new MergeThread(t1.get(),t2.get());
m.start();
m.join();
