scala 和java

package scala

object Demo3ScalaOnJava {
  def main(args: Array[String]): Unit = {
    /**
      * scala 和java相互兼容  语法不兼容
      * */
  //在scala中使用java中的类
    val student = new Demo4JavaStudent("001","张三")
    println(student)
  }
}

package scala;

public class Demo4JavaStudent {
    private String id;
    private String name;

    public Demo4JavaStudent() {
    }

    public Demo4JavaStudent(String id, String name) {
        this.id = id;
        this.name = name;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Demo4JavaStudent{" +
                "id='" + id + '\'' +
                ", name='" + name + '\'' +
                '}';
    }
}

package scala;

public class Demo5JavaOnScala {

    public static void main(String[] args) {
        //调用scala中的方法
        Demo6Fun.print("java");
    }
}

package scala

/**
  * object 中的方法可以直接通过类名直接调用
  * */
object Demo6Fun {
  def print (str: String): Unit ={
    println("scala"+str )
  }
}

scala和java相互兼容但语法不兼容