import java.util.Scanner; 
public class Main{ 
    public static void main(String[] args) { 
         Scanner scan = new Scanner(System.in); 
         int no1 = scan.nextInt();
         String name1 = scan.next();
         int age1 = scan.nextInt();
         String seminary1 = scan.next();
         Teacher t1 = new Teacher(no1, name1, age1, seminary1);
         System.out.println(t1.toString());
         
         int no2 = scan.nextInt();
         String name2 = scan.next();
         int age2 = scan.nextInt();
         String seminary2 = scan.next(); 
         Teacher t2 = new Teacher(no2, name2, age2, seminary2);
         System.out.println(t2.toString());
         
         System.out.println(t1.equals(t2));
         
         scan.close();  
    } 
}  

class Teacher{
	private int no;
	private String name;
	private int age;
	private String seminary;
	public Teacher(int _no, String _name, int _age, String _seminary) {
		no = _no;
		name = _name;
		age = _age;
		seminary = _seminary;
	}
	public int getNo() {
		return no;
	}
	public String getName() {
		return name;
	}
	public int getAge() {
		return age;
	}
	public String getSeminary() {
		return seminary;
	}
	public String equals(Teacher t) {
		if(this.no == t.getNo()) {
			return "true";
		}
		else
			return "false";
	}
	public String toString() {
		return "no: " +no +", name:" +name +", age: " +age +", seminary: " +seminary;
	}
}

重写equals函数还可：
public boolean equals(Teacher t) {
        if(this.no == t.getNo()) {
            return true;
        }
        else
            return false;
    }