java计算器小程序.docx

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1、编写一个简易的聊天器程序，至少提供一个聊天内容显示文本域和一个发送消息的文本框界面，要求实现在发送信息框内填写内容并按下回车后，把该内容添加到上面的文本域内。packagecom;importjava.awt.F1ow1ayout;importjava.awt.1ayoutManager;importjava.awt.event.FocusEvent;importjava.awt.event.Focus1istener;importjava.awt.event.KeyAdapter;importjava.awt.event.KeyEvent;importjavax.swing.*;pub1ic

2、c1ass1tsdemoextendsJFrameimp1ementsFocus1istenerstaticfina1int#=300;staticfina1ints=300;J1abe111,12;JTextAreat1;JTextFie1dt2;JPane1jp1,jp2,jp3;1tsdemoO(SUPer(聊天室程序”)；jp1newJPane1O;jp2=nwJPane1O;I1=IIeWJ1abeI(接收消息”)；t1=newJTextArea(4,20);JScro11Panes2=newJScro1IPane(t1,Scro11PaneConstants.VERTICA1_SC

3、RO11BAR_A1WAYS,Scro1IPaneConstants.HORIZONTA1_SCRO11BAR_A1WAKS);s2.addFocus1istener(this);jp1.add(11);jp1.add(s2);12=newJ1abe1(输入消息”)；t2=newJTeXtFie1d(发送内容，20);t2.addFocus1istener(this);t2.addKey1istener(newKeyAdapterO(pub1icvoidkeyPressed(KeyEvente)if(e.getKeyCharO=n)t1.setText(t1.getText()+*n*+t2.

4、getText();t2.SetTeXt();文本框清空)；jp2.add(12);jp2.add(t2);F1ow1ayoutf1=newF1ow1ayout();this.Set1ayout(f1);this,add(jp1);this.add(jp2);SetSiZe(S);SetDefau1tC1oseOperationONC1OSE);SetVisib1e(true);)pub1icstaticvoidmain(Stringargs)(1tsdemos1=new1tsdemoO；)pub1icvoidfocusGained(FocusEvente)if(e.ge!Component(

5、)=t2)t2.SetTeXt();清空文本域；)pub1icvoidfocus1ost(FocusEvente)if(e.getComponent()=t2)t2.SetTeXt（发送消息”）；清空文本域;packageCOM;importjava.awt.F1ow1ayout;importjava.awt.event.FocusEvent;importjava.awt.event.Focus1istener;importjava.awt.event.KeyAdapter;importent.KeyEvent;importjavax.swing.*;pub1icc1ass1tsextends

6、JFrameimp1ementsPocus1istenerJ1abe1si,s2,s3;JTextFie1dt1,t2,t3;JTextAreaa1;JButtonw1,w2;JPane1jp,jp1,jp2,jp3;1ts(StringTit1e)(SetTitIe(聊天室-客户端程序”)；jp=newJPane1();s1=newJ1abe1(服务器;t1=newJTextFie1dC127.O.O.,20);w1=newJButton(,退出“)；jp.add(s1);jp.add(t1);jp.add(w1);s2=newJ1abeI(端口号：)；t2=newJTextFie1dC20

7、00,/j20);w2=newJButton(*退出”)；jp1=newJPane1();jp1.add(s2);jp1.add(t2);jp1.add(w2);jp2=newJPane1();a1=newJTeXtArea(客户端服务器2008-8-1911：36：26n连接完成n服务器2008-8-1911：36：33nabcn”,4,7);jp2.add(a1);jp3=newJPane1();s3=newJ1abe1(z,发送“)；t3=newJTextFie1d(20);t3.addFocus1istener(this);t3.addKey1istener(newKeyAdapter

8、Opub1icvoidkeyPressed(KeyEvente)(if(e.getKeyChar()=n)a1.setText(a1.getText()+n+双getText();t3.SetTeXt();文本框清空)；jp3.add(s3);jp3.add(t3);F1ow1ayoutf1=newF1ow1ayout();Set1ayout(f1);add(jp);add(jp1);ac1d(jp2);add(jp3);setSize(400,400);SetDefau1tcioseOperation(JFrame.EXITONC1OSE);SetVisib1e(true);pub1icst

9、aticvoidmain(Stringargs)1tsss=new1ts();)pub1icvoidfocusGained(FocusEvente)if(e.getComponent()=t2)(t2.SetTeXt();清空文本域：)pub1icvoidfocus1ost(FocusEvente)if(e.getComponent()=t2)(t2.SetTeXt(“发送消息”)；清空文本域;)实现简单的计算器的功可课后完成。packagesex;importjava.awt.*;importjava.awt.event.ActionEvent;importjava.awt.event.Ac

10、tion1istener;importjavax.swing.*;pub1icc1assJSqdemoextendsJFrameimp1ementsAction1istenerfJPane1jp,jp1,jp2zjp3zjp4,jp5;J1abe111;JTextFie1dt1;JButtonk1,k2,k3,w1,w2,w3,w4,w5,w6,w7,w8,w9,w1,w11zw12zw13,w14zw15zw16zw17zw18zw19zw20;Strings1zs2zs;Jsqdemo()(SUPer(计算器”);jp=newJPane1();jp1=newJPane1();jp2=new

11、JPane1();jp3=newJPane1();jp4=newJPane1();jp5=newJPane1();11=newJ1abe1(,计算结果：,);t1=newJTextFie1d(40);jp.Set1ayout(newGrid1ayout(1,2);jp.add(11);jp.add(t1);k1=newJButton(,Java,);k2=newJButton(,Backspack,);k3=newJButton(,CE,);k3.addAction1istener(this);jp1.Set1ayout(newGrid1ayout(1,3);jp1,add(k1);jp1.a

12、dd(k2);jp1,add(k3);/jp1.Set1ayout(newGrid1ayout(1,3);w1=newJButton(,7,*);w1.addAction1istener(this);w2=newJButton(,8);w2.addAction1istener(this);w3=newJButton(,9,*);w3.addAction1istener(this);w4=newJButton();w4.addAction1istener(this);w5=newJButton(,sqrt,);w5.addAction1istener(this);jp2.Set1ayout(ne

13、wGrid1ayout(1,5);jp2add(w1);jp2.add(w2);jp2.add(w3);jp2.add(w4);jp2add(w5);w6=newJButton(,4,);w6.addAction1istener(this);w7=newJButton(,5);w7.addAction1istener(this);w8=newJButton(,6u);w8.addAction1istener(this);w9=newJButton(,*)；w9.addAction1istener(this);w1=newJButton(,%,);w1.addAction1istener(thi

14、s);jp3.Set1ayout(newGrid1ayout(1,5);jp3add(w6);jp3add(w7);jp3add(w8);jp3add(w9);jp3add(w1);w11=newJButton(,1,);w11.addActIon1istener(this);w12=newJButton(,2u);w12.addActIon1istener(this);w13=newJButton(,3,);w13.addActIon1istener(this);w14=newJButton(,-u);w14.addActIon1istener(this);w15=newJButton(,sin,);w15.addActIon1istener(this);jp4.Set1ayout(newGrid1ayout(1,5);jp4.add(w11);jp4.add(w12);jp4.add(w13);jp4.add(Wi.4);jp4.add(w15);w1=newJButton(,0,);w16.addActIon1istener(this);w17=newJButton(,cos,);w17.addActIon1istener(this);w