tygghh的专栏

java.applet [8 examples] java.awt [78 examples] java.awt.datatransfer [3 examples] java.awt.dnd [3 examples] java.awt.event [8 examples] java.awt.font [5 examples] java.awt.geom [4 examples] java.awt.image [21 examples] java.awt.print [6 examples] java.beans [12 examples] java.io [35 examples] java.lang [58 examples] java.lang.ref [3 examples] java.lang.reflect [17 examples] java.math [6 examples] java.net [27 examples] java.nio [27 examples] java.nio.charset [2 examples] java.rmi [6 examples] java.security [30 examples] java.security.cert [9 examples] java.sql [73 examples] java.text [26 examples] java.util [50 examples] java.util.jar [5 examples] java.util.logging [20 examples] java.util.prefs [18 examples] java.util.regex [26 examples] java.util.zip [9 examples] javax.accessibility [7 examples] javax.crypto [14 examples] javax.imageio [6 examples] javax.naming [9 examples] javax.naming.directory [12 examples] javax.naming.event [2 examples] javax.naming.ldap [4 examples] javax.net.ssl [4 examples] javax.print [6 examples] javax.print.attribute [4 examples] javax.print.attribute.standard [3 examples] javax.print.event [3 examples] javax.rmi [3 examples] javax.security.auth.login [3 examples] javax.security.cert [1 examples] javax.servlet [11 examples] javax.servlet.jsp [18 examples] javax.servlet.jsp.jstl.core [6 examples] javax.servlet.jsp.tagext [1 examples] javax.sound.midi [7 examples] javax.sound.sampled [9 examples] javax.swing [141 examples] javax.swing.border [3 examples] javax.swing.colorchooser [10 examples] javax.swing.event [1 examples] javax.swing.filechooser [19 examples] javax.swing.table [62 examples] javax.swing.text [49 examples] javax.swing.text.html [2 examples] javax.swing.tree [15 examples] javax.swing.undo [1 examples] javax.xml.parsers [8 examples] javax.xml.transform [5 examples] javax.xml.transform.sax [1 examples] org.w3c.dom [30 examples] org.xml.sax [3 examples]

1）以下哪个是Java应用程序main方法的有效定义? C A. public static void main(); B. public static void main( String args ); C. public static void main( String args[] ); D. public static void main( Graphics g ); E. public static boolean main( String a[] ); 2) 编译和运行以下代码的结果为：A public class MyMain{ public static void main(String argv){ System.out.println("Hello cruel world"); } }

（1）下列叙述中正确的是 A）栈是“先进先出”的线性表 B）队列是“先进后出”的线性表 C）循环队列是非线性结构 D）有序线性表既可以采用顺序存储结构，也可以采用链式存储结构 （2）支持子程序调用的数据结构是 A）栈 B）树 C）队列 D）二叉树

一、相关类说明篇 ㈠ File类 　　这个类包装了一个上传文件的所有信息。通过它，可以得到上传文件的文件名、文件大小、扩展名、文件数据等信息。