Java鍵盤輸入實例

引導語：java不像C中擁有scanf這樣功能強大的函數,大多是通過定義輸入輸出流對象，以下是本站小編分享給大家的Java鍵盤輸入實例，歡迎閲讀!

import ner;

/**

* 測試從鍵盤讀取用户的.輸入,關鍵類為Scanner

* @author Administrator

*

*/

public class TestInput {

public static void main(String[] args) {

Scanner s = new Scanner();

tln("請輸入你的姓名：");

String name = Line();

tln("請輸入你的年齡：");

int age = Int();

tln("請輸入你的工資：");

float salary = Float();

tln("你的信息如下：");

tln("姓名："+name+"n"+"年齡："+age+"n"+"工資："+salary);

}

}

説明：Scanner的對象的方法nextLine()接收字符和字符串類型的輸入;nextInt()接收int類型的;nextFloat()接收float類型的，相信後面的就不用一一列舉了吧。

方法2：

BufferedReader reader=new BufferedReader(new InputStreamReader());

t("Please input a number:");

String str=Line(); //獲取字符串

tln("The number you input is:"+str);

或

InputStreamReader reader = new InputStreamReader();

BufferedReader input = new BufferedReader(reader);

t("Enter your age: ");

String text = Line();

int age = new Integer(text)alue();

tln("You are " + age + " years old, now,");

int year = 2003 - age;

tln("so you were probably born in " + year);

需要拋出io異常。

import .*;

- @5 n0 _4 H: c( y: Hclass JavaIO_02N {' U- 9 P1 S, C2 m- R3 p& t

public static void main(String param[])

# u P+ ]+ a2 L6 O! V {: B7 A6 r3 ^ [4 ~

String nn1="";//定義一個String整型對象nn1: b5 T) n6 E9 f4 @9 p

BufferedReader distream = new BufferedReader(new InputStreamReader());

, p1 J D/ B, @1 L" q6 P' a tln("鍵入一個整數"); r& m/ H2 s' Q h" T( |+ j

nn1=Line();//進行輸入，並把輸入的數存入nn1中/ l, u4 y3 e5 R

) J+ D7 n$ u; z% v3 Z7 g# S* w0 l int n1=eInt(nn1);( z4 l# |( L/ q

if(n1%2==0)

. C6 b9 U$ D* F( y! K tln(n1+"是一個偶數");

3 ?! ^" c% C9 ], i- G9 L9 }/ b else( u- G, Z( Z* { V# _; _0 O

tln(n1+"是一個奇數"); 2 _; b) N, Q2 4 W9 D: y$ t! E5 ~# J

}% c! z' y( d6 d/ v# {. _7 Q

}

1 F: w6 M1 H) |8 j) O: e' C4 e

& v" }5 S9 }& Y& l8 B

" f9 G8 K, H+ A6 P% ajava不可能出現語句在任何方法，類之外的

/* * Created on 2005-4-5

* * TODO To change the template for this generated file go to

* Window - Preferences - Java - Code Style - Code Templates

*/

import eredReader;

import ception;

import tStreamReader;

/**

* @author Zhangql

*

* TODO To change the template for this generated type comment go to

* Window - Preferences - Java - Code Style - Code Templates

*/

public class EnterConsole

{

public static void main(String[] args) throws IOException

{

EnterConsole enterConsole = new EnterConsole();

tConsoleChar();

}

/**

* 從控制對接收一行字符串，然後輸出到控制枱

* @throws IOException

*/

public void printConsoleLine() throws IOException

{

BufferedReader br = new BufferedReader(new InputStreamReader());

String str = null;

tln("Enter your value:");

str = Line();

tln("your value is :"+str);

}

/**

* 從控制枱接收一個字符

* 然後打印到控制枱上

* @throws IOException

*/

public void printConsoleChar() throws IOException

{

t("Enter a Char:");

char i = (char) ();

tln("your char is :"+i);

}

}