我有一些：可是添不下！！！Chapter 2 Exercise 1 //: c02:E01_HelloWorld.java //+M java E01_HelloWorld /****************** Exercise 1 ****************** * Following the HelloDate.java example in this * chapter, create a "hello, world" program that * simply prints out that statement. You need * only a single method in your class (the "main" * one that gets executed when the program * starts). Remember to make it static and to * include the argument list, even though you * don't use the argument list. Compile the * program with javac and run it using java. If * you are using a different development * environment than the JDK, learn how to compile * and run programs in that environment. ***********************************************/ public class E01_HelloWorld { public static void main(String args[]) { System.out.println("Hello, world!"); } } ///:~ The +M directive tells my makefile builder tool to add this command (java HelloWorld) to the commands that it automatically runs while building the program. This way, if the execution fails for any reason then the make will abort and show that something is wrong for a particular program. This is a very simple form of built-in testing: automatically running the program to ensure no exceptions are thrown. You’ll see this on most of the programs in this solution guide, and the makefiles that come with the source code (that is packaged with this guide) will automatically run the programs.
Exercise 1
//: c02:E01_HelloWorld.java
//+M java E01_HelloWorld
/****************** Exercise 1 ******************
* Following the HelloDate.java example in this
* chapter, create a "hello, world" program that
* simply prints out that statement. You need
* only a single method in your class (the "main"
* one that gets executed when the program
* starts). Remember to make it static and to
* include the argument list, even though you
* don't use the argument list. Compile the
* program with javac and run it using java. If
* you are using a different development
* environment than the JDK, learn how to compile
* and run programs in that environment.
***********************************************/
public class E01_HelloWorld {
public static void main(String args[]) {
System.out.println("Hello, world!");
}
} ///:~
The +M directive tells my makefile builder tool to add this command (java HelloWorld) to the commands that it automatically runs while building the program. This way, if the execution fails for any reason then the make will abort and show that something is wrong for a particular program. This is a very simple form of built-in testing: automatically running the program to ensure no exceptions are thrown. You’ll see this on most of the programs in this solution guide, and the makefiles that come with the source code (that is packaged with this guide) will automatically run the programs.
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狂谢浪子兄:>
thank you!