贴代码
List<Student> lists = new ArrayList<>();
Student student = new Student();
student.setName("laoli");
student.setNumber(1);
lists.add(student);
Student student1 = new Student();
student1.setName("erzi");
student1.setNumber(2);
lists.add(student1);
Student student3 = new Student();
student3.setName("three");
student3.setNumber(1);
lists.add(student3);
List<Student> collect = lists.stream().filter(s -> s.getNumber()==1&& !s.getName().equals("laoli")).collect(Collectors.toList());
for (Student student2 : collect) {
System.out.println(student2.getName());
}
输出结果
three
主要代码:
List<Student> collect = lists.stream().filter(s -> s.getNumber()==1&& !s.getName().equals("laoli")).collect(Collectors.toList());
这个filter(s -> s.getNumber()==1&& !s.getName().equals(“laoli”)) 就是将你要过滤的对象取出来,设置过滤条件就好了。
这个设置条件的地方,就当成使用 if()时, 括号里面的内容。
附上student的类:
public class Student{
private String name;
private Integer number;
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public Integer getNumber() {
return number;
}
public void setNumber(Integer number) {
this.number = number;
}
}