Doubt

When i compile the below source code i am getting the below error  please help me in solving this error.

Thank u in advance,
seena
Source Code
===========
package c06;

class WaterSource {
  private String s;
  WaterSource() {
    System.out.println("WaterSource()");
    s = new String("Constructed");
  }
  public String toString() { return s; }
}

public class SprinklerSystem {
  private String valve1, valve2, valve3, valve4;
  WaterSource source;
  int i;
  float f;
  void print() {
    System.out.println("valve1 = " + valve1);
    System.out.println("valve2 = " + valve2);
    System.out.println("valve3 = " + valve3);
    System.out.println("valve4 = " + valve4);
    System.out.println("i = " + i);
    System.out.println("f = " + f);
    System.out.println("source = " + source);
  }
  public static void main(String[] args) {
    SprinklerSystem x = new SprinklerSystem();
    x.print();
  }
}


Error File
============
Compiling C:\ssjava\chap6\exer1.java
C:\ssjava\chap6\exer1.java:20: Public class c06.SprinklerSystem must be defined in a file called "SprinklerSystem.java".
public class SprinklerSystem
             ^
1 error