How do I get the java class files to get the bytecode? I was doing this and it's not making the class files(nothing happen)

C:\myjava>notepad lab4_1.java C:\myjava>javac lab4_1.java C:\myjava> C:\myjava>javac lab4_1.java C:\myjava>java lab4_1 It is 10 o'clock. C:\myjava>