java stream filter 只包含 name=lili 的

可以使用如下代码实现：

List<Person> people = ... // 假设这里有一个Person对象的列表
List<Person> filteredPeople = people.stream()
        .filter(person -> "lili".equals(person.getName()))
        .collect(Collectors.toList());

这段代码会筛选出`name`属性为"lili"的`Person`对象，并将它们放入一个新的列表中。当然，你需要将代码中的`Person`替换成你自己的实体类名，并根据实际情况修改属性名和属性值。

相关问题

python将a=[{"name":"lili","age":12,"sex":"男"},{" name":"mary","age":18,"sex":女}]写入excel文件

可以使用Python中的pandas库将列表a写入Excel文件。首先，导入pandas库。然后，创建一个DataFrame对象，将列表a作为数据传递给DataFrame。最后，使用to_excel方法将DataFrame写入Excel文件。

import pandas as pd

a = [{"name": "lili", "age": 12, "sex": "男"}, {"name": "mary", "age": 18, "sex": "女"}]

df = pd.DataFrame(a)
df.to_excel("output.xlsx", index=False)

class Person{ private String name; private int age; private char gender; public Person(String name,int age,char gender){ this.name=name; this.age=age; this.gender=gender; } public void printInfo(){ System.out.println("姓名: "+name); System.out.println("年龄: "+age); System.out.println("性别: "+gender); } } class Student extends Person{ private String school; private int score; public Student(String name,int age,char gender,String school,int score){ super(name,age,gender); this.school=school; this.score=score; } public void printInfo(){ super.printInfo(); System.out.println("学校: "+school); System.out.println("成绩: "+score); } } class Teacher extends Person{ private String course; public Teacher(String name,int age,char gender,String course){ super(name,age,gender); this.course=course; } public void printInfo(){ super.printInfo(); System.out.println("课程: "+course); } } //替换下面的学生信息,修改主类的名字 public class Experiment_04_01 { public static void main(String[] args) { Student stud=new Student01("lili",19,'F',"齐鲁工业大学",90); Teacher tech=new Teacher("coco",30,'F',"高级程序设计"); stud.printInfo(); System.out.println(); tech.printInfo(); } }

抱歉，您的代码有一些错误。首先，您在创建学生对象时使用了错误的类名，应该是"Student"而不是"Student01"。其次，由于您的代码中没有定义名为"Student01"的类，因此需要将主类的名字从"Experiment_04_01"修改为"Main"。以下是修改后的代码：

class Person {
    private String name;
    private int age;
    private char gender;

    public Person(String name, int age, char gender) {
        this.name = name;
        this.age = age;
        this.gender = gender;
    }

    public void printInfo() {
        System.out.println("姓名: " + name);
        System.out.println("年龄: " + age);
        System.out.println("性别: " + gender);
    }
}

class Student extends Person {
    private String school;
    private int score;

    public Student(String name, int age, char gender, String school, int score) {
        super(name, age, gender);
        this.school = school;
        this.score = score;
    }

    public void printInfo() {
        super.printInfo();
        System.out.println("学校: " + school);
        System.out.println("成绩: " + score);
    }
}

class Teacher extends Person {
    private String course;

    public Teacher(String name, int age, char gender, String course) {
        super(name, age, gender);
        this.course = course;
    }

    public void printInfo() {
        super.printInfo();
        System.out.println("课程: " + course);
    }
}

public class Main {
    public static void main(String[] args) {
        Student stud = new Student("lili", 19, 'F', "齐鲁工业大学", 90);
        Teacher tech = new Teacher("coco", 30, 'F', "高级程序设计");
        stud.printInfo();
        System.out.println();
        tech.printInfo();
    }
}

请注意，我已经将主类名更改为"Main"，并将学生对象的类名更正为"Student"。现在您可以运行该代码并得到预期的输出。