HYP_00001_JAVA ERROR

HYP NUM=50

* HYP ERROR MESSAGE00001:
*  TITLE:JAVA VISUTAL MACHINE LAUNCHER(JVM)
*  CONTENT:COULD NOT FIND THE MAIN CLASS.PROGRAM WILL EXIT.
*  ERROR:Bad version number in .class file
*  SOLUTION:MAKE THE JVM(JRE) HIGHER THAN THE JAVA COMPILER COMPILANCE LEVEL

* HYP ERROR MESSAGE00002:
*  TITLE:SAVE PROBLEM
*  CONTENT:
*  REASON:
*  SOME CHARACTERS CANNOT BE MAPPED USING "Cp1252" character encoding.
*  Either change the encoding or remove the characters which are not
*  supported by the "Cp1252" character encoding.
*  SOLUTION:(WINDOW>PREFERENCES>GENERAL>WORKSPACE>TEXT FILE  ENCODING>UTF-8)