摘要： public class Test { public static void main(String args[]) { int x = 10; while( x < 20 ) { System.out.print("value of x : " + x ); x++; System.out.print("\n"... 阅读全文

摘要： public class Test { public static void main(String[] args) { int a = 10; int b = 20; int c = 25; int d = 25; System.out.println("a + b = " + (a + b) ); System.out.pr... 阅读全文

摘要： public class InstanceCounter { private static int numInstances = 0; protected static int getCount() { return numInstances; } private static void addInstance() { numInstances... 阅读全文

摘要： public class Variable{ static int allClicks=0; // 类变量 String str="hello world"; // 实例变量 public void method(){ int i =0; // 局部变量 } } public class Test{ publi... 阅读全文

摘要： public class PrimitiveTypeTest { public static void main(String[] args) { // byte System.out.println("基本类型：byte 二进制位数：" + Byte.SIZE); System.out.println("包装类：java.... 阅读全文

摘要： "; echo "Companyname"; echo "Contactname"; while (odbc_fetch_row($rs)) { $compname=odbc_result($rs,"CompanyName"); $conname=odbc_result($rs,"ContactName"); echo "$compname"; echo ... 阅读全文

摘要： "; } mysqli_close($con); ?> "; } ?> 阅读全文

摘要： connect_error) { die("连接失败: " . $conn->connect_error); } $sql = "SELECT id, firstname, lastname FROM MyGuests"; $result = $conn->query($sql); if ($result->num_rows > 0) { // 输出数据 while(... 阅读全文

摘要： connect_error) { die("连接失败: " . $conn->connect_error); } // 预处理及绑定 $stmt = $conn->prepare("INSERT INTO MyGuests (firstname, lastname, email) VALUES (?, ?, ?)"); $stmt->bind_param("sss", $firstna... 阅读全文

摘要： connect_error) { die("连接失败: " . $conn->connect_error); } $sql = "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('John', 'Doe', 'john@example.com');"; $sql .= "INSERT INTO MyGuests (fi... 阅读全文