源码如下: public class Welcome { public static void main(String[] args) { String[] greeting = new String[3]; greeting[0] = "Welcome to Core Java"; greeting[1] = "by Cay Horstmann"; greeting[2] = "and Gary Cornell"; int i; for (i = 0; i < greeting.length; i++) System.out.println(greeting[i]); } }
String[] greeting = new String[3]; greeting[0] = new "Welcome to Core Java"; greeting[1] = new "by Cay Horstmann"; greeting[2] = new "and Gary Cornell";这样试试.
Win2000中: 右键我的电脑--》属性--》高级--》环境环境变量 classpath=.;jdk安装目\lib path=jdk安装目录\bin 注意:一定不可忽略“.”。 Win98中: 修改autocexe.bat 就是修改自动批处理文件。 添加: set classpath=.;jdk安装目\lib set path=jdk安装目录\bin;%path%
写java application 必须有main()
public static void main(args[])
最好是把源码贴出来看一下.
public class Welcome
{ public static void main(String[] args)
{ String[] greeting = new String[3];
greeting[0] = "Welcome to Core Java";
greeting[1] = "by Cay Horstmann";
greeting[2] = "and Gary Cornell"; int i;
for (i = 0; i < greeting.length; i++)
System.out.println(greeting[i]);
}
}
JAVA_HOME C:\j2sdk
CLASSPATH %JAVA_HOME%\lib
Path C:\j2sdk\bin
greeting[0] = new "Welcome to Core Java";
greeting[1] = new "by Cay Horstmann";
greeting[2] = new "and Gary Cornell";这样试试.
右键我的电脑--》属性--》高级--》环境环境变量
classpath=.;jdk安装目\lib
path=jdk安装目录\bin
注意:一定不可忽略“.”。
Win98中:
修改autocexe.bat 就是修改自动批处理文件。
添加:
set classpath=.;jdk安装目\lib
set path=jdk安装目录\bin;%path%
设置环境变量:
JAVA_HOME=你的JDK安装路径
CLASSPATH=.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar别漏了那个点!!!