Java命令行编译

Question

I recently finished a programming assignment using Netbeans and Java. When I run the program in Netbeans everything runs perfect. My issue comes when I try and run it from the terminal. I run javac with all my .java files and it produces a .class file for each one. Then when I try to run the executable it errors out on me.

ls
Board.java          KenKenPuzzleSolver.java 
Solver.java         Cage.java 
Size.java           Values.java

javac KenKenPuzzleSolver.java Board.java Cage.java Size.java Solver.java Values.java

ls
Board.class         Size.class
Board.java          Size.java
Cage.class          Solver.class
Cage.java           Solver.java
KenKenPuzzleSolver.class    Values.class
KenKenPuzzleSolver.java     Values.java

java KenKenPuzzleSolver
Exception in thread "main" java.lang.NoClassDefFoundError: KenKenPuzzleSolver (wrong name: kenkenpuzzlesolver/KenKenPuzzleSolver)

Also, when the program is run from the terminal it should take in an input file and the name of an output file ie "java KenKenPuzzleSolver input.txt output.txt", and I am not quite sure how to do this.

Answer 1

Why don't you generate an executable with netbeans? You don't have to compile your code every time.

input.txt and output.txt are called arguments. They will be stored in the String[] args array in you main function.

Answer 2

You did not provide the classpath parameter.

Use javac -cp YOURCLASSPATH KenKenPuzzleSolver

Answer 3

The class that you are running should be public and should have the class name same as your file name. It seems like your file name is "KenKenPuzzleSolver" but your class name seems to be "KenkenPuzzleSolver" ( Observe the lowercase ken ). correct that and recompile and re run.

Answer 4

您一定已经搞砸了案例，因为错误已经很明显了，而不是在KenKenPuzzleSolver类命名为kenkenpuzzlesolver ，而不是KenKenPuzzleSolver.java 。