配置環境變量:
JAVA_HOME
D:\MyBase\jdk1.8.0_51
PATH
%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;
ClassPath
.;%JAVA_HOME%\lib\dt.jar; %JAVA_HOME%\lib\tools.jar;
問題1:javac 不能用
解決1:重新寫了一遍 放在在用戶變量裏
測試:
程序如下:
Greetings.java
import javax.swing.*;
public class Greetings{
public static void main(String[] args){
String fullName;
fullName=JOptionPane.showInputDialog(null,"What is your name?");
JOptionPane.showMessageDialog(null,"Nice to meet you,"+fullName+".");
System.exit(0);
}
}
問題2:錯誤: 找不到或無法加載主類 Greetings.java
解決2:應是先javac Greetings.java
然後java Greetings
我寫反了