编辑/etc/profile文件
加入两行
CLASSPATH=/usr/java/jdk/lib/dt.jar:/usr/java/jdk/jre/lib/tools.jar (注意是:而不是;)
export CLASSPATH
加入两行
CLASSPATH=/usr/java/jdk/lib/dt.jar:/usr/java/jdk/jre/lib/tools.jar (注意是:而不是;)
export CLASSPATH
1
Enter second integer
2
Results: The sum is 3是呀,你的classpath里面没有那个包。
你也可以使用这样的方式来编译:
javac -classpath /usr/java/jdk1.4.1/.../dt.jar:/...... Addition.java当然这个是因为你基本的运行环境设置有点问题。请按照这个设置好。http://bbs.cumt.edu.cn/CUMTBBS.ABCUZQBSJKFNDGIMGVLURXFFCKTVLTOVD_B/bbsanc?path=/groups/GROUP_3/Java/DBC661ED1/D9313EE24&item=/M.1051908178.A
# /etc/profile# System wide environment and startup programs, for login setup
# Functions and aliases go in /etc/bashrcpathmunge () {
if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
PATH=$1:$PATH
fi
fi
}# Path manipulation
if [ `id -u` = 0 ]; then
pathmunge /sbin
pathmunge /usr/sbin
pathmunge /usr/local/sbin
fipathmunge /usr/X11R6/bin afterunset pathmunge# No core files by default
ulimit -S -c 0 > /dev/null 2>&1USER="`id -un`"
LOGNAME=$USER
MAIL="/var/spool/mail/$USER"HOSTNAME=`/bin/hostname`
HISTSIZE=1000if [ -z "$INPUTRC" -a ! -f "$HOME/.inputrc" ]; then
INPUTRC=/etc/inputrc
fiexport PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRCfor i in /etc/profile.d/*.sh ; do
if [ -r "$i" ]; then
. $i
fi
doneunset i
#java
#如果你安装的j2sdk的路径不一样,请自行修改
JAVA_HOME=/usr/java/j2sdk1.4.2
export JAVA_HOME
CLASSPATH=.:/usr/java/j2sdk1.4.2/lib/tools.jar:/usr/java/j2sdk1.4.2/jre/lib/rt.jar:/root/javas
export CLASSPATH
PATH=$PATH:$JAVA_HOME/bin:$JAVA_HOME/jre/bin
export PATH
JRE=/usr/java/j2sdk1.4.2/jre
export JRE 可还是不行