JAVA实验指导书(含1-5)

J2EE Java9006320 J2EE Java36 12 122 0.56Java , J2EE1 Java1 JDK1.52HelloWorld Java22 IDE 1 NetBeans IDE2 NetBeans/ / / /23 Java Java Java24 JavaJava 25 Java1 JavaI/O2 Java API2ATMJava16 JavaEE1 Sun ApplicationServer2 Sun Application Server2/ 3 JavaEE Pet Store8 Servlet 1 Serlet/2 Servlet3Servlet29 JSP 1 IDE/ JSP2 JSP3JSP210 JDBC1 JDBC2 / / /211 EJB 1Bean212 EJB 2 Bean 213 WebService WebService2online-Bank JavaEE2.Java1. Java2 Java3 Java4 Java Java1. jdk2.3. JA VA4. JA VA5. JA VAJDK Windows CPU PII 64M 1OOMWindows98/Me/XP/NT/2000 IE 51 JDK1 JDKJDK Java Sun JDK JDK Java Java //192.168.0.2 JDK ——jdk-1_5_0_11-windows-i586-p.exe2 JDKjdk-1_5_0_11-windows-i586-p.exe JDK C:\Program Files\Java\jdk1.5.0_06 jdk1.5.0_06 JDK3 JDKC:\Program Files\Java\jdk1.5.0_06bin javac.exe java.exeDemo2JDK MS DOS Sun JavaJDK Windows Windows XP“Path “C:\Program Files\Java\jdk1.5.0_06\bin; jdk1.5.0_06“classpath “C:\Program Files\Java\jdk1.5.0_06\lib;DOS “java “javac3 DOSDOS java Windows XP/20001 java java “e:\java\programs23“e:\java\programsDOS “e:\java\programs>”DOS “e: e “cd java e java “cd “e:\java\ programs>4 JA V AJava Windows Windows NOTEPAD1 e:\java\programs .txt Hello.java2 Hello.javapublic class Hello {public static void main(String args[]) {System.out.println("Hello world!");}}5 JavaJava Java javac.exe Java Java .java Java .class1 MS DOS Java2javac Hello.java3 ( H )e:\java\programs .class “Hello. class”6 JavaJava java.exe Hello.classjava Hello “java Hello .class×××××1 JA VA .class C/C++2 Java main() ?IDE1. NetBeans IDE2 NetBeans1. NetBeans2. NetBeans3. NetBeans Java4. NetBeans Java5. NetBeans Java6. NetBeans JavaNetBeans IDE WindowsCPU 2.0 MHZ 512M 1OO0MWindowsXP/2000 IE 5 IDE JDK JDK1. NetBeans1 NetBeansJava IDE Sun IDE IDE NetBeans IDE Sun Application Server //192.168.0.2 JDK ——Java-tools-bundle-update4-windows.exe2 JDKJava-tools-bundle-update4-windows.exe NetBeansIDE C:\Program Files\NetBeans 6.0.1 NetBeans JDKSun Application Server Next IDE2. NetBeansNetBeans IDE 6.0.1“File “New Project” Categories“Java” Projects “Java Application” Next3. NetBeans JavaHello.Java main String message="Hello, C++";System.out.println(message);message="I am JAVA.";System.out.println(message);4. NetBeans JavaNetBeans IDE5. NetBeans Java“Run “Run File “Run Hello.javaIDE Output6. NetBeans Java“Run “Run File “Debug Hello.java IDEOutput Hello(debug) Local V ariables “Run “Step Over F8message “Hello,C++. F8“Hello,C++.” F8message "I am JA V A." F8“I am JA V A. F8×××××Debug Java IDE ?Java1 Java234 Java5 Java6 Java1. Java2.3.4.JDK1.5 NetBeans IDENet Beans11 byte short int long char float2321 if...else 4 100 4 100 for 2000 20202331 : 5 1 12 2 ;23×××××1class Sum {public static void main(String args[]) {int i=1,n=10,s=0;while(i<=n){s=s+i;}System.out.println("s="+s);}}2 Java Primitive Type3 JavaJava12 Java Class Interface3 Java4 Java1 Java2Interface5JDK1.5 NetBeans IDE1. Java12public class Car{private String ownerName; //private float curSpeed; //private float curDirInDegree; //public Car(String ownerName){this.ownerName=ownerName;}public Car(String ownerName, float speed, float dirInDegree){this(ownerName);this.curSpeed=speed;this.curDirInDegree=dirInDegree;}public String getOwnerName() { //return ownerName;}public float getCurDirInDegree() { //return curDirInDegree;}public float getCurSpeed() { //return curSpeed;}public void changeSpeed(float curSpeed) { //this.curSpeed = curSpeed;}public void stop(){ //this.curSpeed=0;}}34 main mian Car Carpublic class EXP3_1 {public static void main(String[] args){Car car=new Car(" ",200f,25f);System.out.println(" : "+car.getOwnerName());System.out.println(" : "+car.getCurSpeed());System.out.println(" : "+car.getCurDirInDegree());car.changeSpeed(80);System.out.println(" changeSpeed(80) : " +car.getCurSpeed());car.stop();System.out.println(" stop() , : "+car.getCurSpeed());}}521 Exp3_1 car ownerName Car Exp3_1System.out.println(" : "+car.getOwnerName());Car ownerName2 Exp3_1 car ownerName getOwnerName() Exp3_1 Car Car ownerName getOwnerName() Exp3_1 Car package3.1Car TrashCar TrashCar Car capacity set get main Java import2 TrashCar3:30:8.510changeSpeed(80) :80stop() , :04. Interface1. IShape draw() . Circle IShape draw() Square IShape. main() Circle Square drawJava draw23 IDECircleSquare61. Shape Line.Line IShape. Shape getArea(). Circle Square Shape Circle radius Square border. main() Line Circle SquareLineCircleXXXSquareXXX XXX237×××××1 Class OO2 Interface OO3 public private protected4 Overload Override Overloaded ?5 abstract class interface ?Java1 Java23 Java SDK123 catch4 throw5 throws6 finally7JDK1.5 NetBeans IDE11ArithmeticException 0 catch ArithmeticException e getMessage2public class EXP5_1{public static void main(String[] arg3) {System.out.println(" \n");try {int i=10;i /=0;}catch (ArithmeticException e) {System.out.println(" "+e.getMessage());}finally {System.out.println("finally ");}}}321EXP5_2 IndexOutOfBoundsException ArithmeticException finally2public class EXP5_2{public static void main(String[] args) {System.out.println(“ \n”);try {int i=10;i /=0;}catch (IndexOutOfBoundsException e) {System.out.println(" "+e.getMessage());}finally {System.out.println("finally ");}}}34 IDE Step Debug IDE3 catch1try ArithmeticException a 0 IndexOutOfBoundsException c 1 c[1] catch2public class EXP5_3{public static void main(String[] args) {try {int a=args.length;System.out.println("\na = "+a);int b=42/a;int c[]={1};c[1]=99;}catch (ArithmeticException e) {System.out.println(" 0 "+e);}catch (ArrayIndexOutOfBoundsException e) {System.out.println(" "+e);}}}34 IDE Step Debug IDE5 ArithmeticException4 throw1Java throw throw Java throw2public class EXP5_4 {static void throwProcess() {try {throw new NullPointerException(" ");}catch (NullPointerException e) {System.out.println("\n throwProcess "+e.getMessage());throw e;}}public static void main(String args[]) {try {throwProcess();}catch (NullPointerException e) {System.out.println(" "+e);}}}34 IDE Step Debug IDE5 throw IndexOutOfBoundsException5 throws1throws throws RuntimeExceptionExp5_5 methodA throws main2import java.io.*;public class EXP5_5{static void methodA() throws IllegalAccessException {System.out.println("\n mathod ");throw new IllegalAccessException();public static void main(String args[]) {try {methodA();}catch (IllegalAccessException e) {System.out.println(" main "+e);}}}34 IDE Step Debug IDE5 main abc try-catch IDE6 finally1catch finally try catch finallyreturn finallyEXP5_6 methodA try finally2class EXP5_6{static void mathodA() {try {System.out.println("\nmathodA ");throw new RuntimeException();}finally {System.out.println(" mathodA finally");}static void methodB() {try{System.out.println("mathodB ");return;}finally {System.out.println(" mathodB finally");}}public static void main(String args[]) {try {methodA();} catch (Exception e) {methodB();}}}34 IDE Step Debug IDE71Exception MyException EXP5_7 MyException2class MyException extends Exception {private int x;MyException(int a) {x=a;}public String toString() {return " MyException";}}public class EXP5_7 {static void mathod(int a) throws MyException {System.out.println("\t mathod ("+a+")");if (a>10) throw new MyException(a); // MyExceptionSystem.out.println(" ");}public static void main(String args[]) {try {System.out.println("\n ");mathod(8);mathod(20);mathod(6);}catch (MyException e) {System.out.println("\t ");System.out.println("\t "+e.toString());}System.out.println(" ");}}34 IDE Step Debug IDE×××××1 Java2 final, finally Object finalize3 Java SDK Java5 Java SDK Package4 Java SDK class interface。