一个公有的toString()方法，用于返回公司所有员工的姓名和工资信息，参考格式如下： 46.png

好的，我理解了您的要求。下面是一个示例代码，供您参考：

public class Employee {
    private String name;
    private int salary;

    public Employee(String name, int salary) {
        this.name = name;
        this.salary = salary;
    }

    // 省略 getter 和 setter 方法

    @Override
    public String toString() {
        return "Employee{" +
                "name='" + name + '\'' +
                ", salary=" + salary +
                '}';
    }
}

public class Company {
    private List<Employee> employees;

    public Company(List<Employee> employees) {
        this.employees = employees;
    }

    public List<Employee> getEmployees() {
        return employees;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        for (Employee employee : employees) {
            sb.append(employee.toString()).append("\n");
        }
        return sb.toString();
    }
}

// 使用示例
public class Main {
    public static void main(String[] args) {
        List<Employee> employees = new ArrayList<>();
        employees.add(new Employee("张三", 10000));
        employees.add(new Employee("李四", 12000));
        employees.add(new Employee("王五", 8000));
        Company company = new Company(employees);
        System.out.println(company.toString());
    }
}

输出结果如下：

Employee{name='张三', salary=10000}
Employee{name='李四', salary=12000}
Employee{name='王五', salary=8000}

注意：这只是一个简单的示例，实际的代码可能需要根据具体情况进行修改。