即使在 hasNext() 返回 true 之后调用 LinkedList 迭代器 next() 也会抛出 NoSuchElementException。
环境：Sun Solaris 上的 Java 6
知道为什么我在 next() 方法调用中遇到此异常吗？
// lines is an instance of LinkedList
// writer is a FileWriter, Believe that is irrelevant to issue
while(lines.hasNext()){
int i = 0;
do {
writer.write(lines.next());
writer.newLine();
i++;
} while (lines.hasNext() && i < targetLineCount);
// Some more code...
}
更新更多代码
public class MyClass { // Only one instance of this class is used across application
private List<String> master = new LinkedList<String>();
// Other instance members to tune this instance behaviour
public MyClass(){
// Read Source & populate master
}
public boolean writeDataSlot(Writer writer, int targetLineCount){ // Can be called by different Threads
Ierator<String> lines = master.iterator();
while(lines.hasNext()){
int i = 0;
do {
writer.write(lines.next());
writer.newLine();
i++;
} while (lines.hasNext() && i < targetLineCount);
// Some more code to populate slot from different source.
}
}
}