java中如何用stream流的方式给实体类赋值代码实例？
在 Java 中使用 Stream 流的方式给实体类赋值，你可以利用构造函数、setter 方法或者使用函数式接口来实现。下面是几个示例代码：
构造函数方式：
import java.util.stream.Stream;
public class Employee {
private String name;
private int age;
public Employee(String name, int age) {
this.name = name;
this.age = age;
}
// Getters and setters
@Override
public String toString() {
return "Employee [name=" + name + ", age=" + age + "]";
}
public static void main(String[] args) {
Stream<Employee> employeeStream = Stream.of(
new Employee("John", 30),
new Employee("Jane", 35),
new Employee("Alice", 25)
);
employeeStream.forEach(System.out::println);
}
}
Setter 方法方式：
import java.util.stream.Stream;
public class Employee {
private String name;
private int age;
public Employee() {}
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
// Getters
@Override
public String toString() {
return "Employee [name=" + name + ", age=" + age + "]";
}
public static void main(String[] args) {
Stream<Employee> employeeStream = Stream.of(
new Employee().setName("John").setAge(30),
new Employee().setName("Jane").setAge(35),
new Employee().setName("Alice").setAge(25)
);
employeeStream.forEach(System.out::println);
}
}
使用函数式接口方式：
import java.util.function.Function;
import java.util.stream.Stream;
public class Employee {
private String name;
private int age;
public static void main(String[] args) {
Function<String, Function<Integer, Employee>> employeeFactory =
name -> age -> new Employee(name, age);
Stream<Employee> employeeStream = Stream.of(
employeeFactory.apply("John").apply(30),
employeeFactory.apply("Jane").apply(35),
employeeFactory.apply("Alice").apply(25)
);
employeeStream.forEach(System.out::println);
}
}
上述示例中的 Employee 类表示一个简单的员工实体，通过不同的方式使用 Stream 流进行赋值。你可以根据自己的需求选择合适的方式来赋值，并根据实际情况调整代码实现。