Bài 7: Nhập xuất dữ liệu trên giao diện Console

[kimtan.gl91]

/*
* to change this template, choose tools | templates
* and open the template in the editor.
*/
package edu.buidu.java;
 
import java.util.scanner;
 
/**
*
* @author buidu_sse
*/
public class demo {
 
    public static void main(string[] args) {
        string ten;
        int tuoi ;
        int diemtoan ;
        int diemly ;
        int diemhoa;
        scanner nhaplieu = new scanner(system.in);
        system.out.print("nhập vào tên hs: ");
        ten = nhaplieu.nextline();
        system.out.print("nhập vào tuổi hs: ");
        tuoi = nhaplieu.nextint();
        system.out.print("nhập vào điểm toán: ");
        diemtoan = nhaplieu.nextint();
        system.out.print("nhập vào điểm hóa: ");
        diemhoa = nhaplieu.nextint();
        system.out.print("nhập vào điểm lý: ");
        diemly = nhaplieu.nextint();
        system.out.println("---- thong tin hs vua nhap la ------");
        system.out.println("tên: " + ten);
        system.out.println("tuoi: " + tuoi);
        system.out.println("điểm toán: " + diemtoan);
        system.out.println("điểm hóa: " + diemly);
        system.out.println("điểm lý: " + diemhoa);
        int dtb = (diemtoan + diemly + diemhoa) / 3;
        system.out.println("điểm tb: " + dtb);
        if (dtb > 9) {
            system.out.println("xl: hssx");
        } else {
            if (dtb > 7.5) {
                system.out.println("xl: hsg");
            } else {
                if (dtb >= 7) {
                    system.out.println("sl: hsk");
                } else {
                    if (dtb >= 5) {
                        system.out.println("xl: hstb");
                    } else {
                        system.out.println("xl: hsy");
                    }
                }
            }
        }
 
    }
}

thầy ơi giúp em nhận xét xem viết như thế này có bị khuyết trường hay là sẽ xảy ra vấn đề gì không ạ

[totrinh02021990]

ở trên có nhiều bạn làm tốt rồi, bạn có thể tham khảo code của họ xem, bạn chạy đúng và so sánh cách làm với họ xem thế nào ^^

[hoanggian212]

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[color=#000000]
package structuredemo[/color][color=#007700]; [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];public class [/color][color=#0000bb]entrydemo [/color][color=#007700]{    public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string args [/color][color=#007700][]){               [/color][color=#ff8000]// enter the name and phone number of the any object.        [/color][color=#0000bb]scanner in [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]string name[/color][color=#007700];        [/color][color=#0000bb]string address[/color][color=#007700];        [/color][color=#0000bb]string school[/color][color=#007700];        [/color][color=#0000bb]int phonenumber[/color][color=#007700];               [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter of your name!"[/color][color=#007700]);        [/color][color=#0000bb]name [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter your address:"[/color][color=#007700]);        [/color][color=#0000bb]address [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();               [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter your school:"[/color][color=#007700]);        [/color][color=#0000bb]school [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter of your phone number!"[/color][color=#007700]);        [/color][color=#0000bb]phonenumber [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();               [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"your name's:"[/color][color=#007700]+[/color][color=#0000bb]name[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"your phone number's:"[/color][color=#007700]+[/color][color=#0000bb]phonenumber[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"your address:"[/color][color=#007700]+[/color][color=#0000bb]address[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"your school: "[/color][color=#007700]+[/color][color=#0000bb]school[/color][color=#007700]);    }[/color][color=#ff8000]// end the methodmain.[/color][color=#007700]}[/color][color=#ff8000]//end the classentrydemo.[/color] 

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[thegioiford]

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[color=#000000]
package structuredemo[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];public class [/color][color=#0000bb]scoredemo [/color][color=#007700]{    public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string args [/color][color=#007700][]){               [/color][color=#ff8000]//entry name,year of birth,score of the math, phisics, chemistry.        [/color][color=#0000bb]scanner in [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]string name[/color][color=#007700], [/color][color=#0000bb]year[/color][color=#007700];        [/color][color=#0000bb]float math[/color][color=#007700], [/color][color=#0000bb]phisics[/color][color=#007700], [/color][color=#0000bb]chemistry[/color][color=#007700];        [/color][color=#0000bb]float average[/color][color=#007700];               [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter the your name: "[/color][color=#007700]);        [/color][color=#0000bb]name [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter the year of birth:"[/color][color=#007700]);        [/color][color=#0000bb]year [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();               [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter score of the math"[/color][color=#007700]);        [/color][color=#0000bb]math [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter score of the phisics!"[/color][color=#007700]);        [/color][color=#0000bb]phisics [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"enter score of the chemistry!"[/color][color=#007700]);        [/color][color=#0000bb]chemistry [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();               [/color][color=#ff8000]// declare! it very simple!        [/color][color=#0000bb]average [/color][color=#007700]= ([/color][color=#0000bb]math[/color][color=#007700]+[/color][color=#0000bb]phisics[/color][color=#007700]+[/color][color=#0000bb]chemistry[/color][color=#007700])/[/color][color=#0000bb]3[/color][color=#007700];        if([/color][color=#0000bb]average [/color][color=#007700]>= [/color][color=#0000bb]8[/color][color=#007700])            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"wonderful! woa!woa!"[/color][color=#007700]);        else if( [/color][color=#0000bb]average[/color][color=#007700]>=[/color][color=#0000bb]7 [/color][color=#007700]|| [/color][color=#0000bb]average[/color][color=#007700]<[/color][color=#0000bb]8 [/color][color=#007700])            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"good job! okay! i'm very happy!"[/color][color=#007700]);        else if( [/color][color=#0000bb]average[/color][color=#007700]>=[/color][color=#0000bb]5 [/color][color=#007700]|| [/color][color=#0000bb]average[/color][color=#007700]<[/color][color=#0000bb]7 [/color][color=#007700])            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"great! you is beautiful!"[/color][color=#007700]);        else            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"keep trying! i think so! hihi"[/color][color=#007700]);               [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"we are champian!"[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"write by:"[/color][color=#007700]+[/color][color=#0000bb]name[/color][color=#007700]+[/color][color=#dd0000]"\tyear of birth"[/color][color=#007700]+[/color][color=#0000bb]year[/color][color=#007700]);           }[/color][color=#ff8000]//end the methodmain.[/color][color=#007700]}[/color][color=#ff8000]//end the classscoredemo.[/color] 

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[hanoibuon89]

minh nop bai:

package bai1;
import java.util.scanner;
public class bai1 {
    public static void main(string[] args) {
            string  ten;
            float ns,t,l,h,tb,g,k,tb,y;
            scanner nhap=new scanner(system.in);
            system.out.println("nhap ten hoc sinh: ");
            ten=nhap.nextline();
            system.out.println("nhap nam sinh: ");
            ns=nhap.nextfloat();
            system.out.println("nhap diem toan: ");
            t=nhap.nextfloat();
            system.out.println("nhap diem ly :");
            l=nhap.nextfloat();
            system.out.println("nhap diem hoa: ");
            h=nhap.nextfloat();
            tb=((t+l+h)/3);
            system.out.println("diem trung binh cua sv la:"+tb);
            if(tb>=8)
            {
                system.out.println("sinh vien dat hoc luc gioi!!!");
            }
            else if(tb<8&&tb>=6.5)
            {
                system.out.println("sinh vien dat hoc luc kha!!!");
            }
       
            else if(tb<6.5&&tb>=5)
            {
                system.out.println("sinh vien dat hoc luc trung binh!!!");
            }
            else
            {
                system.out.println("sinh vien dat hoc luc yeu!!!");
            }
}
}

[Raovatonline]

[color=#000000]
package baihoc7[/color][color=#007700];   [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];public class [/color][color=#0000bb]baihoc7 [/color][color=#007700]{     public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]){        [/color][color=#0000bb]long nam[/color][color=#007700];        [/color][color=#0000bb]float tb[/color][color=#007700], [/color][color=#0000bb]toan[/color][color=#007700], [/color][color=#0000bb]ly[/color][color=#007700], [/color][color=#0000bb]hoa[/color][color=#007700];         [/color][color=#0000bb]string  ten[/color][color=#007700];        [/color][color=#0000bb]scanner nhapdulieu [/color][color=#007700]= new [/color][color=#0000bb]scanner [/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap ho va ten:"[/color][color=#007700]);        [/color][color=#0000bb]ten[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap nam sinh:"[/color][color=#007700]);        [/color][color=#0000bb]nam[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextlong[/color][color=#007700]();        if ([/color][color=#0000bb]nam[/color][color=#007700]<=[/color][color=#0000bb]0[/color][color=#007700]){            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" ban nhap sai nam:"[/color][color=#007700]);        }else {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" nhap toan, ly, hoa:"[/color][color=#007700]);            [/color][color=#0000bb]toan[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            [/color][color=#0000bb]ly[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            [/color][color=#0000bb]hoa[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            if ((([/color][color=#0000bb]toan [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700])||([/color][color=#0000bb]toan [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) || (([/color][color=#0000bb]ly [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700]) || ([/color][color=#0000bb]ly [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700])) || (([/color][color=#0000bb]hoa [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700]) || ([/color][color=#0000bb]hoa [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700]))){        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập sai điểm:"[/color][color=#007700]);        }else {                [/color][color=#0000bb]tb [/color][color=#007700]= (float) ([/color][color=#0000bb]toan [/color][color=#007700]+ [/color][color=#0000bb]ly [/color][color=#007700]+ [/color][color=#0000bb]hoa[/color][color=#007700]) / [/color][color=#0000bb]3[/color][color=#007700];                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"điểm trung bình 3 môn: " [/color][color=#007700]+ [/color][color=#0000bb]tb[/color][color=#007700]);          if ([/color][color=#0000bb]tb[/color][color=#007700]>[/color][color=#0000bb]8.0[/color][color=#007700]){              [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"xep loai gioi"[/color][color=#007700]);          }else if ([/color][color=#0000bb]tb[/color][color=#007700]>[/color][color=#0000bb]6.5[/color][color=#007700]){                  [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"xep loai kha"[/color][color=#007700]);          }else if ([/color][color=#0000bb]tb[/color][color=#007700]>[/color][color=#0000bb]5.0[/color][color=#007700]){                      [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"xep loai trung binh"[/color][color=#007700]);          }else  if ([/color][color=#0000bb]tb[/color][color=#007700]>[/color][color=#0000bb]3.5[/color][color=#007700]){                          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"xep loai yeu"[/color][color=#007700]);                      }else                          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"xep loai kem "[/color][color=#007700]);                  }              }          }            }        [/color] 

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[namseotop]

bài của bạn rất tốt. bạn có thể code cho sáng sủa thêm nữa thì tuyệt với.... hì

[hungson401]

s

package demo;
import java.util.scanner;
public class baihoc7 {
    public static void main(string[] args){
        long nam;
        float tb, toan, ly, hoa;
 
        string  ten;
        scanner nhapdulieu = new scanner (system.in);
        system.out.print("nhap ho va ten:");
        ten=nhapdulieu.nextline();
        system.out.print("nhap nam sinh:");
        nam=nhapdulieu.nextlong();
        if (nam<=0){
            system.out.println(" ban nhap sai nam:");
        }else {
            system.out.println(" nhap toan, ly, hoa:");
            toan=nhapdulieu.nextfloat();
            ly=nhapdulieu.nextfloat();
            hoa=nhapdulieu.nextfloat();
            if (((toan < 0)||(toan > 10)) || ((ly < 0 ) || (ly > 10 )) || ((hoa < 0 ) || (hoa > 10 ))){
        system.out.println("nhập sai điểm:");
        }else {
                tb = (float) (toan + ly + hoa) / 3;
                system.out.println("điểm trung bình 3 môn: " + tb);
          if (tb>8.0){
              system.out.println("xep loai gioi");
              if (tb>6.5){
                  system.out.println("xep loai kha");
                  if (tb>5.0){
                      system.out.println("xep loai trung binh");
                      if (tb>3.5){
                          system.out.println("xep loai yeu");
                      }else
                          system.out.println("xep loai kem ");
                   
                      }
                  }
               
              }
          }

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source code của bạn khá là khó đọc. hi. bạn có thể code style của mình lại để sáng sủa và người khác cũng dễ sửa hơn.... nếu các bạn đang học lại giống mình thì có thể liên lạc qua facebook. hồ hoài kiệt...

bạn đọc hướng dẫn đưa source code của mình vào thẻ php cho đẹp, hihi.

[123pay]

s
source code của bạn khá là khó đọc. hi. bạn có thể code style của mình lại để sáng sủa và người khác cũng dễ sửa hơn.... nếu các bạn đang học lại giống mình thì có thể liên lạc qua facebook. hồ hoài kiệt...

bạn đọc hướng dẫn đưa source code của mình vào thẻ php cho đẹp, hihi.

hi' tks nha' hohoaikiet

[tuhjnb5g]

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import java.util.scanner;
 
public class bai02 {
    public static void main(string[]args){
        string hoten;
        float ns,t,l,h;
        float tb;
        scanner in=new scanner(system.in);
        system.out.println("nhap ho ten:");
        hoten=in.nextline();
        system.out.println("nam sinh ");
        ns=in.nextfloat();
        system.out.println("diem toan ");
        t=in.nextfloat();
        system.out.println("diem ly ");
        l=in.nextfloat();
        system.out.println("diem hoa ");
        h=in.nextfloat();
        tb=(float)(t+l+h)/3;
        if(t>=8.0)
        {
            system.out.println("day la hs gioi");
        }
        if(t<8.0 && t>=6.5)
        {
            system.out.println("day la hs kha");
        }
        if(t<6.5)
        {
            system.out.println("day la hs trung binh");
        }
    }
}

</blockquote></div>
</div>
</div>