How to set Path of java JDK and How To run java code

How to set Path of java jdk and Run the Java Program with simple demo?


              After the Dwonload jdk or java softwer than After we need to set the java path before java code is not run in NetBeans or Ecilps .
             Setting of the Path os Windows and than set the path and Access java code any Error than come with hight light and also Huamn can Easly slove the Error of Java Code How Has Knowlege of java Laguage.