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public void change(String str, char ch[]) { str = \ ch[1] = 'u'; } }

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String str4 = new String(chars, 2, 6);

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StringBuffer strb = new StringBuffer(str3);

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import java.awt.*; public class Test{/* do something... */} public class Test{/* do something... */} ËÄ¡¢ÅжÏÌâ

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static int sn = 30; final int fn;

final int fk = 40; MemberVar() { fn = ++sn; }

}

public class Exercises5_1 extends Applet { public void paint(Graphics g) { MemberVar obj1 = new MemberVar(); MemberVar obj2 = new MemberVar();

g.drawString(\ g.drawString(\ g.drawString(\ g.drawString(\ } }

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public static void main( ) {

TheOtherClass obj = new TheOtherClass(\ System.out.println(obj.name+' '+obj.gender+' '+obj.nationality);

}

System.out.println(\}

public class TheOtherClass{

private String name,gender,nationality;

public TheOtherClass(String name,String gender,String nationality) { this.name=name; this.gender=gender; this.nationality=nationality;

} }

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public class MyMainClass {

public static void main(String args[]) {

TheOtherClass obj = new TheOtherClass(\

System.out.println(obj.name + ' ' + obj.gender + ' ' + obj.nationality); System.out.println(\ } }

class TheOtherClass {

public String name, gender, nationality;

public TheOtherClass(String name, String gender, String nationality) {

this.name = name; this.gender = gender;

this.nationality = nationality; } }

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}

public static void setCarName(){ carName=\}

public static void setMileage(){ mileage=180; } }

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public abstract class Car { private String carName; public int mileage;

private static final int TOP_SPEED = 50; abstract void alert();

public static int getTopSpeed() { return TOP_SPEED; }

public void setCarName() { carName = \ }

public void setMileage() { mileage = 180; } }

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public Exercises6_1(){ this(\ } }

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public TT(){

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} }

public Student aStu() { return new Student(); }

public static void main(String args[]) { Exercises6_2 g3 = new Exercises6_2(); g3.count = 10; Exercises6_2.Student s1 = g3.aStu(); s1.Output(5); } }

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private String name; private int age; public int step; Dog(String s, int a) { name = s; age = a; step = 0; } public void run(Dog fast) { fast.step++; } }

public static void main(String args[]) { Exercises6_3 a = new Exercises6_3(); Dog d = a.new Dog(\ d.step = 29; d.run(d); System.out.println(\ }

}

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public static void setMileage() { mileage = 180; } }

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public static int getTopSpeed() { return TOP_SPEED; }

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public void setMileage() { mileage = 180; } }

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private int x;

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package comsoft.db.jdbc.mssqlserver; import java.sql.*;

public class UpdateRecord {

public static void main(String[] args) {

String JDBCDriver = \ // ÉùÃ÷JDBCÇý¶¯³ÌÐòÀàÐÍ

String conURL = \

\¶¨ÒåJDBCµÄURL¶ÔÏó String[] sno = { \ int[] score = { 100, 99}; try {

£¨1£©Class.forName(JDBCDriver) £¨1£© ; }

catch (ClassNotFoundException e) {

System.out.println(\ } try {

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\ int i = 0, idlen = sno.length; do {

psmt.setInt(1, score[i]); psmt.setString(2, sno[i]); £¨4£©psmt.executeUpdate()

if ( £¨4£© == 1) {

System.out.println(\ÐÞ¸ÄÊý¾Ý±í:tblstudentÖÐѧºÅΪ \µÄ¼Ç¼³É¹¦£¡\

}

else {

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++i; }

while (i < sno.length); psmt.close();

// ²éѯÊý¾Ý¿â²¢°ÑÊý¾Ý±íµÄÄÚÈÝÊä³öµ½ÆÁÄ»ÉÏ Statement smt = con.createStatement();

ResultSet rset = smt.executeQuery(\ while (rset.next()) {

System.out.println(rset.getString(\ \ }

smt.close(); con.close(); }

catch (SQLException e) {

System.out.println(\ } } }

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