问题

interface Conditions<T> {
    T nameIs(String color);
    T ageUpperThan(int upper);
}

class EmployeeConditions implements Conditions<EmployeeConditions> {
    @Override
    public EmployeeConditions nameIs(String name) {
        // Implement the logic for checking the name
        return this;
    }

    @Override
    public EmployeeConditions ageUpperThan(int upper) {
        // Implement the logic for checking the age
        return this;
    }
}

class Employee {
    // Employee class implementation
}

class Main {
    public static EmployeeConditions nameIs(String color) {
        return new EmployeeConditions().nameIs(color);
    }

    public static EmployeeConditions isJohn() {
        return nameIs("John");
    }

    public static void main(String[] args) {
        EmployeeConditions show = new EmployeeConditions() {
            @Override
            public EmployeeConditions nameIs(String name) {
                return super.nameIs(name);
            }

            @Override
            public EmployeeConditions ageUpperThan(int age) {
                return super.ageUpperThan(age);
            }
        };

        System.out.println(isJohn().nameIs("John"));
    }
}

Please note that Java does not have the exact equivalent of Scala's implicit parameter and context bounds ([T: Conditions]). In Java, you'll need to explicitly pass the concrete implementation of the Conditions interface to the methods that require it.

trait Conditions[T] {
    def nameIs(color: String): T
    def ageUpperThan(upper: Int): T
}

def nameIs[T](color: String)(implicit fi: Conditions[T]): T = fi.nameIs(color)

def isJohn[T: Conditions]: T = nameIs[T]("John")

def show: Conditions[String] =
    new Conditions[String] {
        def nameIs(name: String): String = s"name is $name"
        def ageUpperThan(age: Int): String = s"age upper $age"
    }

println(isJohn[String](show))