现在,我的程序包含了一段代码,看起来像这样:
while (arrayList.iterator().hasNext()) {
//value is equal to a String value
if( arrayList.iterator().next().equals(value)) {
// do something
}
}
我在遍历ArrayList方面做得对吗?
我收到的错误信息是:
java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.ArrayList.get(Unknown Source)
at main1.endElement(main1.java:244)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at main1.traverse(main1.java:73)
at main1.traverse(main1.java:102)
at main1.traverse(main1.java:102)
at main1.main(main1.java:404)
我想展示其余的代码,但是它非常广泛,如果我没有正确执行迭代,我会认为唯一的可能性是我没有正确初始化ArrayList
。
forEach
方法:https://dev59.com/o2Qn5IYBdhLWcg3wr446 - Vitalii Fedorenko