Java中的Hello World编译错误

Question

I try to compile HelloWorld on my Mac.

public class HelloWorld {
    public static void main(String args[]) {
        System.out.println("Hello World!");
    }
}

I run from the terminal:

$javac HelloWorld.java

and I get

error: error reading /Users/gioelelamanno/Library/Java/Extensions/algs4.jar; 
cannot read zip file 1 error

Instead Eclispse compiles and run without problems. How can I fix it?

Answer 1

More than likely, the JAR file algs4.jar is corrupt. Either remove it from the classpath or get another copy if required for future compilation. The JAR file can be downloaded here

Answer 2

You need to create the .jar file within eclipse. Once you save it, then you should be able to view it in the console. In this case, the terminal. I had this same issue. This is how I resolved it.