Public class Java

The . class files describes the instructions to the Java Virtual Machine . The . class file contains the bytecode that will translate by the JVM into platform-specific machine code.

class’ expected. public class Calculator{ public Calculator(){ } public int sum(int one, int two) { int s = one + two; return int s; } } This error usually means that you are trying to declare or specify a variable type inside of return statement or inside of a method calls .

java file contains your Java source code while a . class file contains the Java bytecode produced by the Java compiler . It is your . class files that run on the JVM to execute a Java application.