《JAVA从入门到精通》第10页

Java从入门到精通 - Swing表格JTable支持滚动

importjava.awt.BorderLayout;importjavax.swing.JFrame;importjavax.swing.JScrollPane;importjavax.swing.JTable;publicclassJTableTestextendsJFrame{publicJTableTest(){super();setTitle("表格");setBounds(100,1

dingdangxiaoma·2010-09-03 12:00

Java从入门到精通 - Swing表格JTable支持滚动

importjava.awt.BorderLayout;importjavax.swing.JFrame;importjavax.swing.JScrollPane;importjavax.swing.JTable;publicclassJTableTestextendsJFrame{ publicJTableTest() { super(); setTitle("表格"); setBoun

dingdangxiaoma·2010-09-03 12:00

Java从入门到精通 - 数据库操作ResultSetLike

importjava.net.URLDecoder;importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.ResultSet;importjava.sql.SQLException;importjava.sql.Statement;publicclassResultSetLike{ /** *取得相对路径的Con

dingdangxiaoma·2010-09-02 15:00

Java从入门到精通 - 数据库操作-PrepareStatementTest

importjava.net.URLDecoder;importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.PreparedStatement;importjava.sql.ResultSet;importjava.sql.SQLException;importjava.sql.Statement;publiccl

dingdangxiaoma·2010-09-02 15:00

Java从入门到精通 - 数据库操作-相对路径的Connection

/** *取得相对路径的Connection *@return */ publicstaticConnectiongetConnection(){ Connectionconn=null; try{ Stringpath=""; ClasstheClass=ConnTest2.class; //System.out.println(ConnTes

dingdangxiaoma·2010-09-02 14:00

Java从入门到精通 - 数据库操作连接ACCESS数据库

importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.ResultSet;importjava.sql.SQLException;importjava.sql.Statement;publicclassConnAccessTest{ Connectioncon; String DBDriver = "sun

dingdangxiaoma·2010-09-02 14:00

Java从入门到精通 - 反射Annotation

Constructor_Annotation: importjava.lang.annotation.*;@Target(ElementType.CONSTRUCTOR) //用于构造方法@Retention(RetentionPolicy.RUNTIME)//在运行时加载到Annotation到JVM中public@interfaceConstructor_Annotation{ String

dingdangxiaoma·2010-09-01 13:00

Java从入门到精通 - 反射Method

importjava.lang.reflect.Method;/** *@authorAdministrator 请注意顺序问题 * */publicclassMethodTest{ staticvoidstaticMethod() { System.out.println("执行staticMethod()方法"); } publicintpublicMethod(inti) { Syste

dingdangxiaoma·2010-09-01 13:00

Java从入门到精通 - 反射Field

importjava.lang.reflect.Field;publicclassFieldTest{ inti; publicfloatf; protectedbooleanb; privateStrings; publicFieldTest() { i=0; f=0.0f; b=true; s=""; } publicstaticvoidmain(String[]args){

dingdangxiaoma·2010-09-01 13:00

Java从入门到精通 - 反射Constructor构造函数的使用

importjava.lang.reflect.Constructor;//请注意执行顺序问题，开始时，我测试时用的是MyEclipse中的Jdk1.5.Jdk1.6我发现他们Constructor的顺序不一样的。publicclassReflectTest{ Strings; inti,i2,i3; protectedReflectTest() { s=""; i=0; i2=0; i3

dingdangxiaoma·2010-09-01 13:00

Java从入门到精通 - IO输入输出压缩解压缩

压缩:importjava.io.*;importjava.util.zip.ZipEntry;importjava.util.zip.ZipOutputStream;publicclassMyZipTest{ /** * *@paramzipFileName 要压缩成的文件名 *@paraminputFile 要压缩的文件夹 *@throwsException 异常处理 */ privat

dingdangxiaoma·2010-08-31 20:00

Java从入门到精通 - IO输入输出BufferedReaderWriter

publicstaticvoidmain(String[]args){ Stringcontent[]={"好久不见了","最近好吗","常联系"}; Filefile=newFile("E:/workspace/Java

dingdangxiaoma·2010-08-31 19:00

Java从入门到精通 - IO输入输出FileInputOutputStream

publicclassFileInputOutputStream{ publicstaticvoidmain(String[]args){ Filefile=newFile("E:/workspace/Java

dingdangxiaoma·2010-08-31 19:00

Java从入门到精通 - IO输入输出

publicclassFileTest{ /** *@paramargs */ publicstaticvoidmain(String[]args){ Filefile=newFile("E:/workspace/Java

dingdangxiaoma·2010-08-31 19:00

Java从入门到精通 - 集合类ArrayList to Collection

importjava.util.*; //导入类publicclassMuster{ /** *@paramargs */ publicstaticvoidmain(String[]args){ Collectionlist=newArrayList(); //集合类 list.add("a"); //添加数据 list.add("b"); list.add("c"); Itera

dingdangxiaoma·2010-08-31 13:00

Java从入门到精通 - 集合类HashMap

importjava.util.*; //导入类publicclassMapTest{ /** *@paramargs */ publicstaticvoidmain(String[]args){ Mapmap=newHashMap(); Empemp=newEmp("001","张三"); Empemp2=newEmp("005","张四"); //创建emp对象 Empemp

dingdangxiaoma·2010-08-31 13:00

Java从入门到精通 - 集合类 List

importjava.util.*; //导入类publicclassListGather{ /** *@paramargs */ publicstaticvoidmain(String[]args){ //TODOAuto-generatedmethodstub Listlist=newArrayList(); //集合类 list.add("a"); list.add("b

dingdangxiaoma·2010-08-31 13:00

Java从入门到精通 - 异常处理

publicclassBaulk{ /*publicstaticvoidmain(Stringargs[]) { //intresult=3/0; //System.out.println(result); //byzero. try { Stringstr="lili"; System.out.println(str+"年龄是："); intage=Integer.parse

dingdangxiaoma·2010-08-28 20:00

Java从入门到精通 - 继承多态

classCopyOfQuadrangle{ privateCopyOfQuadrangle[]qtest=newCopyOfQuadrangle[6];//实例化保存四边形的数组对象 privateintnextindex=0; publicvoiddraw(CopyOfQuadrangleq) { if(nextindex

dingdangxiaoma·2010-08-28 20:00

Java从入门到精通 - Java数字处理类

importjava.text.DecimalFormat;importjava.util.Random;publicclassDecimalFormatDemo{ /** *简单格式化 *@parampattern *@paramvalue */ publicstaticvoid SimpleFormat(Stringpattern,doublevalue) { DecimalFormatmy

dingdangxiaoma·2010-08-25 21:00

Java从入门到精通 - Java包装类

publicclassJavaType{ /** *@paramargs */ publicstaticvoidmain(String[]args){ //TODOAuto-generatedmethodstub //summation Stringstr[]={"89","12","10","18"}; intsum=0; for(inti=0;iLong //longmylong=L

dingdangxiaoma·2010-08-25 21:00