public class teacherDemo {	public static void main(String []args) {		String name = "张三";		int age = 25;		teacher tea = new teacher();		tea.setName(name);		tea.setAge(age);		System.out.println(tea.getAge());		System.out.println(tea.getName());			}}class teacher{	private String name;	private int age;		//属性	public String getName() {		return name;	}	public void setName(String sName) {		name = sName;	}	public int getAge() {		return age;	}	public void setAge(int sAge) {		if(sAge<22) {			System.out.println("错误，教师年龄不能小于22岁");			sAge = 22;		}else {			age = sAge;		}	}	}