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d:\temp\TestCP\d1\p1\Class1.java
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package p1;  
public class Class1 {  
  public void show(){  
    System.out.println("Class1");  
  }  

package p1;
public class Class1 {
  public void show(){
    System.out.println("Class1");
  }
}
d:\temp\TestCP\d2\p2\Class2.java
view plaincopy to clipboardprint?
package p2;  
import p1.Class1;  
public class Class2 {  
  public static void main(String[] args){  
    Class1 c1 = new Class1();  
    c1.show();  
  }  

package p2;
import p1.Class1;
public class Class2 {
  public static void main(String[] args){
    Class1 c1 = new Class1();
    c1.show();
  }
}
±àÒëµÄʱºò£¬ÎÒÃÇÏÈÔÚ d:\temp\testCP\d1 ±àÒëClass1
D:\temp\testCP\d1>javac p1\Class1.java
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È»ºóÎÒÃÇÔÚ d:\temp\testCP\d2 ϱàÒë Class2¡£ÓÐ2¸ö·½·¨½øÐбàÒ룺
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D:\temp\testCP\d2>javac -sourcepath .;../d1 p2\Class2.java
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D:\temp\testCP\d2>javac -sourcepath . -cp ../d1 p2\Class2.java
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D:\temp\testCP\d2>javac -sourcepath . -cp ../d1;d:/lib/spring.jar p2\Class2.java
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