使用多个.jar和javac [英] Using multiple .jar with javac

问题描述

请原谅我的术语。我正在尝试为我的CS类使用带有java程序的三个jar文件。第一个是funjava，一个简化的java语言，其他是类定义颜色和几何。这是我的代码以及当我尝试运行它时会发生什么。

  import colors。*; 
 
 class Canvas {
 
 public static void main（String [] args）{
 System.out.println（test123）; 
 
 Circle cr1 = new Circle（new Posn（1,2），5，blue）; 
 Circle cr2 = new Circle（新Posn（5,4），3，red）; 
} 
 
} 
 
 class Circle {
 
 Posn center; 
 int rad; 
字符串颜色; 
 
 Circle（Posn p，int r，String c）{
 this.center = p; 
 this.rad = r; 
 this.color = c; 
} 
 
} 
 
类Posn {
 
 int x; 
 int y; 
 
 Posn（int x，int y）{
 this.x = x; 
 this.y = y; 
} 
 
} 
  

Circle的最后一个参数应该是colors.jar中的颜色，而不是字符串。

  niko @ niko-laptop：〜/ Classes / Fundies2 $ javac  - cp * .jar Canvas.java 
错误：类名称'funjava.jar，geometry.jar'仅在明确请求注释处理时才被接受
 1错误
 niko @ niko-laptop ：〜/ Classes / Fundies2 $ ls 
 1-20-10.java 1-21-10.java Book.class Canvas.class Circle.java Examples.class funjava.jar hw1~Main.java OceanWorld.java 
 1-21-10 Author.class book.java Canvas.java colors.jar Examples.java geometry.jar Ishape OceanWorld Posn.class 
 1-21-10~Partue.java Book.java Circle.class Combo.java Fundies2.txt hw1 Main.class OceanWorld~Rect.java 
  

那么我该如何明确请求注释处理？
谢谢。

解决方案

除了 Romain Muller 的回答：

如果要快速使用当前目录中的所有* .jar文件，并且使用的是JDK 6或更高版本，则可以使用单星号。在unix shell中（比如在Linux中），你需要转义星号：

  javac -cp \ * Canvas .java 
  

这也适用于运行Java应用程序：

  java -cp。：\ * Canvas 
  

注意。：告诉Java查看当前目录以及* .jar文件以查找 Canvas.class 。

在Windows上，使用分号（; ）而不是冒号作为分隔符。

pardon my terminology. I'm trying to use three jar files with a java program for my CS class. The first is funjava, a simplified java language, and the others are class definitions color and geometry. Here is my code and what happens when I try to run it.

import colors.*;

class Canvas{

 public static void main(String [] args){
  System.out.println("test123"); 

  Circle cr1 = new Circle( new Posn(1,2), 5, "blue");
  Circle cr2 = new Circle( new Posn(5,4), 3, "red");
 }

}

class  Circle{

 Posn center;
 int rad;
 String color;

 Circle(Posn p, int r, String c){
  this.center = p;
  this.rad = r;
  this.color = c;  
 }

}

class Posn{

 int x;
 int y;

 Posn(int x, int y){
  this.x = x;
  this.y = y;  
 }

}

The last argument of Circle should be a color from the colors.jar, not a string.

niko@niko-laptop:~/Classes/Fundies2$ javac -cp *.jar Canvas.java 
error: Class names, 'funjava.jar,geometry.jar', are only accepted if annotation processing is explicitly requested
1 error
niko@niko-laptop:~/Classes/Fundies2$ ls
1-20-10.java  1-21-10.java  Book.class  Canvas.class  Circle.java  Examples.class  funjava.jar   hw1~        Main.java    OceanWorld.java
1-21-10       Author.class  book.java   Canvas.java   colors.jar   Examples.java   geometry.jar  Ishape      OceanWorld   Posn.class
1-21-10~      Author.java   Book.java   Circle.class  Combo.java   Fundies2.txt    hw1           Main.class  OceanWorld~  Rect.java

So how do I explicitly request annotation processing? Thank you.

解决方案

In addition to Romain Muller's answer:

If you want to quickly use all of the *.jar files in the current directory, and you're using JDK 6 or later, you can use a single-asterisk. In a unix shell (like in Linux), you'll need to escape the asterisk:

javac -cp \* Canvas.java

This works when running the Java application as well:

java -cp .:\* Canvas

Note the .: to tell Java to look in the current directory as well as the *.jar files to find Canvas.class.

On Windows, use a semicolon (;) instead of a colon as a separator.

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