javac package

root135@root135:~/Downloads/java_0/school$ ls
school_0
root135@root135:~/Downloads/java_0/school$ javac -d school/bin/ school/Personal.java 
root135@root135:~/Downloads/java_0/school$ tree
.
├── school
│   ├── bin
│   │   └── school
│   │       ├── library
│   │       │   ├── Book.class
│   │       │   └── Computer.class
│   │       └── Personal.class
│   ├── library
│   │   ├── Book.java
│   │   └── Computer.java
│   ├── Personal.java
│   ├── room
│   │   └── Book.java
│   └── test.java
└── school.tar.gz

4 directories, 8 files
root135@root135:~/Downloads/java_0/school$ java -cp school/bin/ school/Personal
-----------Download--------------
school.tar
---这种方法适用于javac编译文件与java执行文件不在一个目录的情况下---
javac -d gov_hospital/bin/ gov_hospital/RunHospitalApp.java
java -cp gov_hospital/bin/ gov_hospital/RunHospitalApp

root135@root135:~/Downloads/java_0/school$ find . -name *.class
./school/bin/school/Personal.class
./school/bin/school/library/Computer.class
./school/bin/school/library/Book.class
root135@root135:~/Downloads/java_0/school$ find . -name *.class -exec rm -rfv {} \;
removed './school/bin/school/Personal.class'
removed './school/bin/school/library/Computer.class'
removed './school/bin/school/library/Book.class'
root135@root135:~/Downloads/java_0/school$ java school/Personal
Error: Could not find or load main class school.Personal
Caused by: java.lang.ClassNotFoundException: school.Personal
root135@root135:~/Downloads/java_0/school$ javac school/Personal.java 
root135@root135:~/Downloads/java_0/school$ tree
.
├── school
│   ├── bin
│   │   └── school
│   │       └── library
│   ├── library
│   │   ├── Book.class
│   │   ├── Book.java
│   │   ├── Computer.class
│   │   └── Computer.java
│   ├── Personal.class
│   ├── Personal.java
│   ├── room
│   │   └── Book.java
│   └── test.java
└── school.tar.gz

6 directories, 9 files
root135@root135:~/Downloads/java_0/school$ java school/Personal
root135@root135:~/Downloads/java_0/school$