using NPOI.HSSF.UserModel; using Microsoft.VisualStudio.TestTools.UnitTesting; using System.IO; namespace NPOI.Sample1 { /// <summary> /// 创建Excel文件 /// </summary> [TestClass] public class CreateExcelFile { /// <summary> /// 使用NPOI创建一个标准
本文版权归 远方的风lyh和博客园共有,欢迎转载,但须保留此段声明,并给出原文链接,谢谢合作. 先看一下 TreeMap 的 put(K key, V value) public TreeMap() { comparator = null;} public V put(K key, V value) { Entry<K,V> t = root; if (t == null) { compare(key, key); // type (and possibly null) check root
1,需要依赖的jar包, <!-- POI(operate excel) start --> <!-- the version of the following POI packages must be consistent --> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.17&
Example10_1.java import java.io.*; public class Example10_1 { public static void main(String args[]) { File f = new File("C:\\ch10","Example10_1.java"); System.out.println(f.getName()+"是可读的吗:"+f.canRead()); System.out.println