Bài 7: Nhập xuất dữ liệu trên giao diện Console

**huyhung2732** · 10-08-2013, 07:00 AM

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Mã nguồn PHP:


[color=#000000]
import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner [/color][color=#007700];public class [/color][color=#0000bb]diemtrungbinh [/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]string ten[/color][color=#007700];          [/color][color=#0000bb]int tuoi[/color][color=#007700];          [/color][color=#0000bb]float toan[/color][color=#007700],[/color][color=#0000bb]ly[/color][color=#007700],[/color][color=#0000bb]hoa[/color][color=#007700],[/color][color=#0000bb]tbc[/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]();          do {          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap tuoi : "[/color][color=#007700]);          [/color][color=#0000bb]tuoi[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();          if([/color][color=#0000bb]tuoi[/color][color=#007700]<[/color][color=#0000bb]1[/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]"nhap sai nhap lai"[/color][color=#007700]);}          while ([/color][color=#0000bb]tuoi[/color][color=#007700]<[/color][color=#0000bb]1[/color][color=#007700]);          do{          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem mon toan: "[/color][color=#007700]);          [/color][color=#0000bb]toan[/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println [/color][color=#007700]([/color][color=#dd0000]"nhap sai nhap lai"[/color][color=#007700]);}          while([/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]);          do{          [/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 diem mon ly "[/color][color=#007700]);          [/color][color=#0000bb]ly[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();          if([/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println [/color][color=#007700]([/color][color=#dd0000]"nhap sai nhap lai"[/color][color=#007700]);}          while([/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]);          do{          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem mon hoa: "[/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]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]"nhap sai nhap lai "[/color][color=#007700]);}          while([/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]tbc[/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]3[/color][color=#007700];          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"diem trung binh : "[/color][color=#007700]+[/color][color=#0000bb]tbc[/color][color=#007700]+[/color][color=#dd0000]"
"[/color][color=#007700]);          if([/color][color=#0000bb]tbc[/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]"xep loai gioi"[/color][color=#007700]);          else          if([/color][color=#0000bb]tbc[/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]tbc[/color][color=#007700]>[/color][color=#0000bb]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 trung binh"[/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 yeu"[/color][color=#007700]);                                }}[/color]

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**leana9** · 10-11-2013, 07:00 AM

cho mình hỏi sao mình bị lỗi này tks(lỗi chữ màu đỏ mình đánh dấu oy đó)

package bt1;

import java.util.scanner;

/**
*
* @author nguye_000
*/
public class studentmanager {
string hoten;
string namsinh;
float toan;
float ly;
float hoa;
float dtb;
public void nhap(){

scanner sc = new scanner(system.in);
system.out.println("mời nhập vào tên sinh viên: ");
hoten = sc.nextline();
system.out.println("mời nhập vào năm sinh: ");
namsinh = sc.nextline();
system.out.println("nhập vào điểm toán: ");
toan = sc.nextfloat();
system.out.println("nhập vào điểm ly: ");
ly = sc.nextfloat();
system.out.println("nhập vào điểm toán: ");
hoa = sc.nextfloat();
dtb=(toan+ly+hoa)/3;
system.out.println("họ tên: " +hoten);
system.out.println("năm sinh: " +namsinh);
system.out.println("điểm tb: " +dtb);
}
run:
mời nhập vào tên sinh viên:
anh tuan
mời nhập vào năm sinh:
1993
nhập vào điểm toán:
8.9
nhập vào điểm ly:
9.2
nhập vào điểm toán:
8.3
họ tên: anh tuan
năm sinh: 1993
điểm tb: 8.799999
java result: -1073741819
build successful (total time: 24 seconds)

**motnguoitenla** · 10-17-2013, 07:00 AM

bài của mình nè:
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Mã nguồn PHP:


[color=#000000]
package com[/color][color=#007700].[/color][color=#0000bb]hanhnv[/color][color=#007700].[/color][color=#0000bb]core[/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]bai7 [/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]string fullname[/color][color=#007700];        [/color][color=#0000bb]int namsinh[/color][color=#007700];        [/color][color=#0000bb]float diemtoan[/color][color=#007700], [/color][color=#0000bb]diemly[/color][color=#007700], [/color][color=#0000bb]diemhoa[/color][color=#007700], [/color][color=#0000bb]diemtb[/color][color=#007700];               [/color][color=#0000bb]scanner s [/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].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap ho va ten: "[/color][color=#007700]);        [/color][color=#0000bb]fullname [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextline[/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]"nhap nam sinh: "[/color][color=#007700]);        [/color][color=#0000bb]namsinh [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        if ([/color][color=#0000bb]namsinh [/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 da nhap nam sinh khong hop le, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]diemtoan [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/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]"nhap diem toan: "[/color][color=#007700]);        [/color][color=#0000bb]diemtoan [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        if ([/color][color=#0000bb]diemtoan [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]diemtoan [/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]"ban da nhap diem toan khong hop le, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]diemtoan [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/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]"nhap diem ly: "[/color][color=#007700]);        [/color][color=#0000bb]diemly [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        if ([/color][color=#0000bb]diemly [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]diemly [/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]"ban da nhap diem ly khong hop le, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]diemly [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/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]"nhap diem hoa: "[/color][color=#007700]);        [/color][color=#0000bb]diemhoa [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        if ([/color][color=#0000bb]diemhoa [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]diemhoa [/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]"ban da nhap diem hoa khong hop le, vui long nhap lai: "[/color][color=#007700]);            [/color][color=#0000bb]diemhoa [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        }               [/color][color=#0000bb]diemtb [/color][color=#007700]= (float) ([/color][color=#0000bb]diemtoan [/color][color=#007700]+ [/color][color=#0000bb]diemly [/color][color=#007700]+ [/color][color=#0000bb]diemhoa[/color][color=#007700])/[/color][color=#0000bb]3[/color][color=#007700];               if ([/color][color=#0000bb]diemtb[/color][color=#007700]>=[/color][color=#0000bb]8.0 [/color][color=#007700]&& [/color][color=#0000bb]diemtb [/color][color=#007700]<=[/color][color=#0000bb]10.0[/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]"diem trung binh cua "[/color][color=#007700]+ [/color][color=#0000bb]fullname [/color][color=#007700]+ [/color][color=#dd0000]" la "[/color][color=#007700]+[/color][color=#0000bb]diemtb[/color][color=#007700]+[/color][color=#dd0000]", ban la hoc sinh gioi day :d."[/color][color=#007700]);        } else if ([/color][color=#0000bb]diemtb [/color][color=#007700]>= [/color][color=#0000bb]6.5 [/color][color=#007700]&& [/color][color=#0000bb]diemtb [/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]"diem trung binh cua "[/color][color=#007700]+ [/color][color=#0000bb]fullname [/color][color=#007700]+ [/color][color=#dd0000]" la "[/color][color=#007700]+[/color][color=#0000bb]diemtb[/color][color=#007700]+[/color][color=#dd0000]", ban la hoc sinh kha nhe!."[/color][color=#007700]);        } else if ([/color][color=#0000bb]diemtb [/color][color=#007700]>= [/color][color=#0000bb]5.0 [/color][color=#007700]&& [/color][color=#0000bb]diemtb [/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]"diem trung binh cua "[/color][color=#007700]+ [/color][color=#0000bb]fullname [/color][color=#007700]+ [/color][color=#dd0000]" la "[/color][color=#007700]+[/color][color=#0000bb]diemtb[/color][color=#007700]+[/color][color=#dd0000]",  ban chi la hoc sinh trung binh thoi."[/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]"diem trung binh cua "[/color][color=#007700]+ [/color][color=#0000bb]fullname [/color][color=#007700]+ [/color][color=#dd0000]" la "[/color][color=#007700]+[/color][color=#0000bb]diemtb[/color][color=#007700]+[/color][color=#dd0000]", ban hoc yeu kem qua!. "[/color][color=#007700]+[/color][color=#0000bb]fullname[/color][color=#007700]+ [/color][color=#dd0000]", ban can phai co gang hon!"[/color][color=#007700]);    }}[/color]

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**hajdajgja** · 10-19-2013, 07:00 AM

ad mid cho minh hoi cai nay nha
co su khac nhau giua hai lenh nay ban giai thich dum minh nha:
code1:
system.out.print("nhập tên: ");
ten = nhapdulieu.nextline();
system.out.print("nhập tuổi: ");
tuoi = nhapdulieu.nextint();
code2:
system.out.print("nhập tuổi: ");
tuoi = nhapdulieu.nextint();
sssystem.out.print("nhập tên: ");
ten = nhapdulieu.nextline();

**lephuocthinh646** · 10-23-2013, 07:00 AM

nộp bài nè ^^
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Mã:

import java.util.scanner;
public class bt1 {
    public static void main(string[] args) {
        scanner input = new scanner(system.in);
        system.out.println("nhap vao ho va ten:");
        string ten = input.nextline();
        float diemtoan, diemly, diemhoa;
        system.out.println("nhap diem toan:");
        diemtoan = input.nextfloat();
        system.out.println("nhap diem ly:");
        diemly = input.nextfloat();
        system.out.println("nhap diem hoa:");
        diemhoa = input.nextfloat();
        float diemtb = (diemtoan + diemly + diemhoa)/3;
        system.out.println(ten);
        system.out.println("diem trung binh 3 mon: " + diemtb);
        if (diemtb >= 8) {
            system.out.println("hoc sinh gioi.");
        } else if (diemtb < 8 && diemtb >= 6.5) {
            system.out.println("hoc sinh kha.");
        } else {
            system.out.println("hoc sinh trung binh.");
        }
    }
}

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**PGkjenpre12** · 11-04-2013, 07:00 AM

bài 1:
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Mã nguồn PHP:


[color=#000000]
package unit7[/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]bai1 [/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]string hoten[/color][color=#007700];        [/color][color=#0000bb]int namsinh[/color][color=#007700];        [/color][color=#0000bb]float toan[/color][color=#007700],[/color][color=#0000bb]ly[/color][color=#007700],[/color][color=#0000bb]hoa[/color][color=#007700],[/color][color=#0000bb]tb[/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]"
nhập họ tên:"[/color][color=#007700]);[/color][color=#0000bb]hoten[/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]"
nhập năm sinh"[/color][color=#007700]);[/color][color=#0000bb]namsinh[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"
điểm toán:"[/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"
điểm lý:"[/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"
điểm hóa:"[/color][color=#007700]);[/color][color=#0000bb]hoa[/color][color=#007700]=[/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/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].print([/color][color=#dd0000]"sinh viên: "[/color][color=#007700]+[/color][color=#0000bb]hoten[/color][color=#007700]+[/color][color=#dd0000]"\tnăm sinh:"[/color][color=#007700]+[/color][color=#0000bb]namsinh[/color][color=#007700]+[/color][color=#dd0000]"\tđiểm trung bình:"[/color][color=#007700]+[/color][color=#0000bb]tb[/color][color=#007700]+[/color][color=#dd0000]"
"[/color][color=#007700]);        if([/color][color=#0000bb]tb[/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]"
xếp loại giỏi"[/color][color=#007700]);        }        else{            if([/color][color=#0000bb]tb[/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]"
xếp loại khá"[/color][color=#007700]);            }            else{                if([/color][color=#0000bb]tb[/color][color=#007700]>=[/color][color=#0000bb]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]"
xếp loại trung bình"[/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]"\
xếp loại yếu "[/color][color=#007700]);                }            }        }    }}[/color]

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

**rickyson280287** · 11-04-2013, 07:00 AM

Gửi bởi quangbk105

ad mid cho minh hoi cai nay nha
co su khac nhau giua hai lenh nay ban giai thich dum minh nha:
code1:
system.out.print("nhập tên: ");
ten = nhapdulieu.nextline();
system.out.print("nhập tuổi: ");
tuoi = nhapdulieu.nextint();
code2:

Mã:

theo mình nghĩ là do bộ đệm bàn phím. code1 thì ok, code2 có thể sửa thành:
system.out.print("nhập tuổi: ");
 
tuoi = nhapdulieu.nextint();
nhapdulieu.nextline();
//hoặc khai báo nhapdulieu=new scanner(system.in);
 
system.out.print("nhập tên: ");
 
ten = nhapdulieu.nextline();

**vanlen10** · 11-24-2013, 07:00 AM

/*
* to change this template, choose tools | templates
* and open the template in the editor.
*/
package android.vn;

import java.util.scanner;

/**
*
* @author nguyen quoc hien
*/
public class demo_1 {

public static void main(string[] args) {
student st = new student();
st.nhap();

}
}

class student {

private string hoten;
private int namsinh;
private float toan, ly, hoa;

public void nhap() {
scanner sc = new scanner(system.in);
system.out.print("nhap ho ten vao : ");
hoten = sc.nextline();

do {
system.out.print("nhap nam sinh vao : ");
namsinh = sc.nextint();
} while (namsinh < 0);
system.out.println("nhap diem cac mon ");
do {
system.out.print("diem mom toan : ");
toan=sc.nextfloat();
if(toan<0||toan>10){
system.out.println("thang diem chi tu 0 - 10 moi ban nhap lai");
}
} while (toan<0||toan>10);
do {
system.out.print("diem mom ly : ");
ly=sc.nextfloat();
if(ly<0||ly>10){
system.out.println("thang diem chi tu 0 - 10 moi ban nhap lai");
}
} while (ly<0||ly>10);
do {
system.out.print("diem mom hoa : ");
hoa=sc.nextfloat();
if(hoa<0||hoa>10){
system.out.println("thang diem chi tu 0 - 10 moi ban nhap lai");
}
} while (hoa<0||hoa>10);
system.out.println("

=================================================" );
system.out.println("===========xep loai ca nam=======================");
system.out.println("sinh vien : "+hoten);
system.out.println("sinh nam : "+namsinh);
system.out.println("diem mon toan : "+toan);
system.out.println("diem mon ly : "+ly);
system.out.println("diem mon hoa : "+hoa);
float dtb=(toan+ly+hoa)/3;
system.out.println("diem trung binh 3 mon : "+dtb);
if(dtb>=8){
system.out.println("hoc luc gioi!");
}else if(dtb>=6.5){
system.out.println("hoc luc kha!");
}else if(dtb>=5.0){
system.out.println("hoc luc trung binh!");
}else if(dtb>=3.0){
system.out.println("hoc luc yeu!");
}else{
system.out.println("hoc luc kem");
}
}

}
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**HUU6028680** · 12-24-2013, 07:00 AM

import java.awt.*;
public class cau2 {
public static void main(string[] args) {
int n=8,i=0,j=0,dem;
int [] a=(8,0,0,0,0,0,12,3);
int [] b=new int[n];
while(i<n){;
if(a==0)
i++;
else{
b[j]=a;
i++;
j++;
dem++;
}
}
for(j=0;j<dem;j++);
system.out.print(b[j]+"");
}
}

các pro tìm lỗi e với

**huyenhcit123** · 12-25-2013, 07:00 AM

bài đây anh

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</div>package duy.edu.hello;

import java.util.scanner;

public class hello {
public static void main(string [] args){
double toan,ly,hoa;
int namsinh;
string hovaten;
scanner type = new scanner(system.in);
system.out.println("nhập họ và tên :");
hovaten = type.nextline();
system.out.println("nhập năm sinh :");
namsinh = type.nextint();
system.out.println("nhập điểm toán :");
toan = type.nextdouble();
system.out.println("nhập điểm lý :");
ly = type.nextdouble();
system.out.println("nhập điểm hóa :");
hoa = type.nextdouble();
if ((toan>10) | (toan < 0) | (ly > 10) | (ly<0) |(hoa >10) |(hoa < 0)){
system.out.println("bạn nhập điểm không đúng");
}else{
double tb = ((toan+ly+hoa)/3);
if ((tb >= 5) & (tb < 6.5)){
system.out.println("bạn" + hovaten + "là học sinh trung bình");
}if((tb>=6.5) & (tb<8)){
system.out.println("bạn" + hovaten + "là học sinh khá");
}if((tb>=8) & (tb<=10)){
system.out.println("bạn" + hovaten + "là học sinh giỏi");
}if(tb<=5){
system.out.println("bạn" + hovaten + "là học sinh dưới trung bình");
}
}
}
}

Chủ đề: Bài 7: Nhập xuất dữ liệu trên giao diện Console

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