Question

thinking in java的源代码编译问题

最近在看thinking in java,奈何这本书的源代码要解决的问题也很多，本人太菜，多谢指教！
命令行输入java ShowMethods.java ShowMethods.java出现 错误：找不到或无法加载主类 ShowMethods
不知道是环境变量出现了问题还是没有src的问题，望大神们看一下
以下为要解决源代码：
//: typeinfo/ShowMethods.java
package typeinfo; /* Added by Eclipse.py */
// Using reflection to show all the methods of a class,
// even if the methods are defined in the base class.
// {Args: ShowMethods}
import java.lang.reflect.*;
import java.util.regex.*;
import static net.mindview.util.Print.*;

public class ShowMethods {
private static String usage =
"usage:\n" +
"ShowMethods qualified.class.name\n" +
"To show all methods in class or:\n" +
"ShowMethods qualified.class.name word\n" +
"To search for methods involving 'word'";
private static Pattern p = Pattern.compile("\\w+\\.");
public static void main(String[] args) {
if(args.length < 1) {
print(usage);
System.exit(0);
}
int lines = 0;
try {
Class<?> c = Class.forName(args[0]);
Method[] methods = c.getMethods();
Constructor[] ctors = c.getConstructors();
if(args.length == 1) {
for(Method method : methods)
print(
p.matcher(method.toString()).replaceAll(""));
for(Constructor ctor : ctors)
print(p.matcher(ctor.toString()).replaceAll(""));
lines = methods.length + ctors.length;
} else {
for(Method method : methods)
if(method.toString().indexOf(args[1]) != -1) {
print(
p.matcher(method.toString()).replaceAll(""));
lines++;
}
for(Constructor ctor : ctors)
if(ctor.toString().indexOf(args[1]) != -1) {
print(p.matcher(
ctor.toString()).replaceAll(""));
lines++;
}
}
} catch(ClassNotFoundException e) {
print("No such class: " + e);
}
}
} /* Output:
public static void main(String[])
public native int hashCode()
public final native Class getClass()
public final void wait(long,int) throws InterruptedException
public final void wait() throws InterruptedException
public final native void wait(long) throws InterruptedException
public boolean equals(Object)
public String toString()
public final native void notify()
public final native void notifyAll()
public ShowMethods()
*///:~
打错了，命令行是输入java ShowMethods ShowMethods

Answer 1

没编译怎么运行啊

追问

你是说用javac的命令吗，也试过，不过我不确定是不是使用正确了