复制和替换

package chapter01;

public class java02_HelloJava {
    public static void main(String[] args){
        System.out.println("Hello");
        System.out.println("Hello");
        System.out.println("Hello");
        System.out.println("Hello");
        System.out.println("Hello");
        // ctrl + D 复制当前行
        // ctrl + R 替换当前的文字内容
    }
}