javac -d <target dir> sourceFile.java
for example, <target dir> is "C:\temp",
sourceFile.java:
package com.sss;
public class sourceFile {}javac -d C:\temp sourceFile.javaclass will be packed under C:\temp\com\sss
for example, <target dir> is "C:\temp",
sourceFile.java:
package com.sss;
public class sourceFile {}javac -d C:\temp sourceFile.javaclass will be packed under C:\temp\com\sss
加一个“.”编译本目录下aa.java