How to get data from keyboard in java

java method code for obtaining data from the keyboard:

import java.util.Scanner;// 导包， 找到Scanner的位置
 
public class TestScore{
 
       public static void main(String [] args){
 
               //Scanner  ，描扫仪
 
               //【1】创建Scanner对象,  System.in标准的输入设备，键盘
 
                Scanner input=new Scanner(System.in); //input是描扫仪的名称，自己起，变量的命名规则
 
               //【2】给用户友好提示   System.out标准的输出设备，显示器
 
               System.out.print("请输入java课程的分数:");                
 
               //声明变量并赋值
 
               int javaScore= input.nextInt();    //从键盘录入一个整数赋值给int类型的变量 javaScore
             
               System.out.print("请输入sql课程的分数:");
 
               int sqlScore=input.nextInt();
                
               System.out.print("请输入stb课程的分数:");
 
               int stbScore=input.nextInt();
                 
               int  diffen;  //声明变量，用于存储分数差
 
               double avg;// 声明变量，用于存储平均分
 
               //给分数差及平均分赋值 
               diffen=javaScore-sqlScore;   //赋值是从右到左
                avg=(javaScore+sqlScore+stbScore)/3; 
               //avg=(javaScore+sqlScore+stbScore)/3.0; 
               System.out.println("-------------------------------"); 
               System.out.println("java\tsql\tstb");
               System.out.println(javaScore+"\t"+sqlScore+"\t"+stbScore);
               System.out.println("-------------------------------");
               System.out.println("java与sql的差是:"+diffen);
               System.out.println("三门课程的平均分为:"+avg);                                  
 
       }
 
}

import java.util.Scanner;
public class HelloWorld{
	public static void main(String [] args ){
		Scanner input=new Scanner(System.in);
		System.out.print("请输入java的成绩");
		int javaScore=input.nextInt();
		System.out.print("请输入python成绩");
		int pythonScore=input.nextInt();
		System.out.println("请输入C语言的成绩");
		int cScore=input.nextInt();
		int avg=(javaScore+pythonScore+cScore)/3;
		int diffen;
		diffen=javaScore-pythonScore;
		System.out.println("各门功课的成绩为：\t"+"javaScore \t"+"pythonScore\t"+"cScore");
		System.out.println("各门功课的成绩为：\t"+javaScore+"\t"+pythonScore+"\t"+cScore);
		System.out.println("java和python的成绩差为："+diffen);
	}
}

SQL statement: Structured Query Language

Standard input device: keyboard, System.in

Standard output device: computer screen, System.out

Create Scanner object: Scanner input=new Scanner(System.in);

For more java knowledge, please pay attention java basic tutorial.

The above is the detailed content of How to get data from keyboard in java. For more information, please follow other related articles on the PHP Chinese website!