백엔드기술/개발언어55 Parser Demo package java_samples_hwang; import org.w3c.dom.*; import org.w3c.dom.Document; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.DocumentBuilder; import org.xml.sax.SAXException; import org.xml.sax.SAXParseException; /** * * @author hwang */ public class ParserDemo { public static void main(String args[]) { try { DocumentBuilderFactory docBuildFactory = DocumentBuilderFac.. 2009. 12. 9. Override Demo package java_samples_hwang; /** * * @author hwang */ class A { public void sub() { System.out.println("Method in Class A"); } } class B extends A { //@overrided method public void sub() { super.sub(); System.out.println("Method in Class B"); } } public class OverrideDemo { public static void main(String args[]) { A aObj = new A(); B bObj = new B(); bObj.sub(); } } 2009. 12. 9. Overload Demo package java_samples_hwang; /** *Demp program on Method overloading * @author hwang */ public class OverloadDemo { public void test() { System.out.println("Method with zero parameter"); } public void test(int a) { System.out.println("Method with 1 parameter "+a); } public void test(int a,int b) { System.out.println("Method with 2 parameters "+a+ "&"+b); } } class Overload { public void main(Stri.. 2009. 12. 9. ConstructorEx package java_samples_hwang; /** * Constructor example program * @author hwang */ public class ConstructorEx { int empId; String empName; public ConstructorEx(int empId, String empName) { this.empId = empId; this.empName = empName; } public void printData() { System.out.println("EmpID :"+empId); System.out.println("EmpName:"+empName); } } class prog { public static void main(String args[]) { Cons.. 2009. 12. 9. InheritanceDemo package java_samples_hwang; /** * * @author hwang */ class Base { int id; String sName; public void setData(int Id,String Name) { id = Id; sName = Name; } } class student extends Base { String sInstitution; public void setInstitute(String s) { sInstitution = s; } public void printData() { System.out.println("The Student Details are....."); System.out.println("Student ID: "+ id); System.out.print.. 2009. 12. 9. Connect sample package java_samples_hwang; import java.sql.*; /** * * @author hwang */ public class Connect { public static void main(String arg[]) { Connection con = null; Statement statement; try { String userName = "root"; String password = "root123"; String url = "jdbc:mysql://localhost:3306/Master"; Class.forName("com.mysql.jdbc.Driver").newInstance(); con = DriverManager.getConnection(url, userName, pass.. 2009. 12. 9. 이전 1 ··· 4 5 6 7 8 9 10 다음