1020/30

三元运算符

idea生成javadoc

Scanner

public class ScannerTest {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入内容：");
        if(scanner.hasNextLine()){
            String str=scanner.nextLine();
            System.out.println("输入的内容是："+str);
        }
        scanner.close();
    }
}

package com.rv.java;

/**
 * @author rv
 * @create 2021-05-11 19:56
 */
public class KongSanJiao {
    public static void main(String[] args) {
        for (int i = 1; i <=5 ; i++) {
            for (int j = 1; j <=5-i ; j++) {
                System.out.print(" ");
            }
            System.out.print("*");
            for (int l = 2; l <=i ; l++) {
                System.out.print(" ");
            }
            for (int l = 3; l <=i ; l++) {
                System.out.print(" ");
            }
            if(i==1)
            System.out.print(" ");
            else System.out.print("*");



//            for (int k = 1; k <i ; k++) {
//                System.out.print(" ");
//                System.out.print("*");
//            }


            System.out.println();
        }
    }

}

JAVA基础02

原文：https://www.cnblogs.com/RenVei/p/14752544.html