1.文件式
1.1javac和java两步法
//示例代码
public class Welcome {
public static void main(String[] args) {
String greeting = "Welcome to Java Tutorial!";
System.out.println(greeting);
for (int i = 0; i < greeting.length(); i++) {
System.out.print("=");
}
System.out.println();
}
}保存为Welcome.java文件，执行如下：
ho@ho-Inspiron-N3010:~$ javac Welcome.java
ho@ho-Inspiron-N3010:~$ java Welcome
Welcome to Java Tutorial!
=========================
ho@ho-Inspiron-N3010:~$ 1.2java一步法
直接运行源代码，不会产生.class字节码文件。
ho@ho-Inspiron-N3010:~$ java Welcome.java
Welcome to Java Tutorial!
=========================
ho@ho-Inspiron-N3010:~$ 2.jshell方式
jshell> String greeting = "Welcome to Java Tutorial!";
...> System.out.println(greeting);
...> for (int i = 0; i < greeting.length(); i++) {
...> System.out.print("=");
...> }
...> System.out.println();
greeting ==> "Welcome to Java Tutorial!"
Welcome to Java Tutorial!
=========================
jshell> 原创文章，作者：huoxiaoqiang，如若转载，请注明出处：https://www.huoxiaoqiang.com/experience/javae/6922.html
微信扫一扫 
支付宝扫一扫