java程序代码套用 java代码编程

一段JAVA程序代码

多了个分号,修改好的程序:

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import java.awt.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.colorchooser.*;

public class Hp extends JFrame {

private static final long serialVersionUID = 1L;

DefaultColorSelectionModel model = new DefaultColorSelectionModel();

JColorChooser colorchooser = new JColorChooser(model);

JLabel label1 = new JLabel("请选择颜色来改变背景色");

Font font = new Font("Serif", Font.ITALIC | Font.BOLD, 40);

GridBagConstraints gcons = new GridBagConstraints();

Color color;

public static void main(String[] args) {

Hp frame1 = new Hp();

frame1.setTitle("JColorChooser 调色板");

frame1.setSize(500, 500);

frame1.setVisible(true);

}

public Hp() {

label1.setFont(font);

getContentPane().setLayout(new GridBagLayout());

gcons.weighty = 1;

gcons.gridwidth = GridBagConstraints.REMAINDER;

getContentPane().add(label1, gcons);

gcons.weighty = 2;

getContentPane().add(colorchooser, gcons);

model.addChangeListener(new ChangeLis());

}

class ChangeLis implements ChangeListener {

public void stateChanged(ChangeEvent e)

{

color = colorchooser.getColor();

getContentPane().setBackground(color);

}

}

}

Java程序代码

import java.awt.*;//计算器实例

import java.awt.event.*;

public class calculator

{

public static void main(String args[])

{

MyWindow my=new MyWindow("计算器");

}

}

class MyWindow extends Frame implements ActionListener

{ StringBuffer m=new StringBuffer();

int p;

TextField tex;

Button b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,jia,jian,cheng,chu,deng,dian,qingling,kaifang;

MyWindow(String s)

{

super(s);

//StringBuffer s2=new StringBuffer();

//String s;

tex=new TextField(18);

b0=new Button(" 0 ");

b1=new Button(" 1 ");

b2=new Button(" 2 ");

b3=new Button(" 3 ");

b4=new Button(" 4 ");

b5=new Button(" 5 ");

b6=new Button(" 6 ");

b7=new Button(" 7 ");

b8=new Button(" 8 ");

b9=new Button(" 9 ");

dian=new Button(" . ");

jia=new Button(" + ");

jian=new Button(" - ");

cheng=new Button(" × ");

chu=new Button(" / ");

deng=new Button(" = ");

qingling=new Button(" 清零 ");

kaifang=new Button(" √ ");

setLayout(new FlowLayout());

add(tex);

add(b0);

add(b1);

add(b2);

add(b3);

add(b4);

add(b5);

add(b6);

add(b7);

add(b8);

add(b9);

add(dian);

add(jia);

add(jian);

add(cheng);

add(chu);

add(kaifang);

add(qingling);

add(deng);

b0.addActionListener(this);

b1.addActionListener(this);

b2.addActionListener(this);

b3.addActionListener(this);

b4.addActionListener(this);

b5.addActionListener(this);

b6.addActionListener(this);

b7.addActionListener(this);

b8.addActionListener(this);

b9.addActionListener(this);

jia.addActionListener(this);

jian.addActionListener(this);

cheng.addActionListener(this);

chu.addActionListener(this);

dian.addActionListener(this);

deng.addActionListener(this);

qingling.addActionListener(this);

kaifang.addActionListener(this);

setBounds(200,200,160,280);

setResizable(false);//不可改变大小

setVisible(true);

validate();

addWindowListener(new WindowAdapter()

{ public void windowClosing(WindowEvent ee)

{ System.exit(0);

}

});

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==b0)

{

m=m.append("0");

tex.setText(String.valueOf(m));

}

if(e.getSource()==b1)

{

m=m.append("1"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b2)

{

m=m.append("2"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b3)

{

m=m.append("3"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b4)

{

m=m.append("4"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b5)

{

m=m.append("5"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b6)

{

m=m.append("6"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b7)

{

m=m.append("7"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b8)

{

m=m.append("8"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b9)

{

m=m.append("9"); tex.setText(String.valueOf(m));

}

if(e.getSource()==jia)

{

m=m.append("+"); tex.setText(String.valueOf(m));

}

if(e.getSource()==jian)

{

m=m.append("-"); tex.setText(String.valueOf(m));

}

if(e.getSource()==cheng)

{

m=m.append("*"); tex.setText(String.valueOf(m));

}

if(e.getSource()==chu)

{

m=m.append("/"); tex.setText(String.valueOf(m));

}

if(e.getSource()==dian)

{

m=m.append("."); tex.setText(String.valueOf(m));

}

String mm=String.valueOf(m);

int p1=mm.indexOf("+");

int p2=mm.indexOf("-");

int p3=mm.indexOf("*");

int p4=mm.indexOf("/");

if(p1!=-1)

{

p=p1;

}

else if(p3!=-1)

{

p=p3;

}

else if(p2!=-1)

{

p=p2;

}

else if(p4!=-1)

{

p=p4;

}

if(e.getSource()==deng)

{

String m1=mm.substring(0,p);

String m2=mm.substring(p+1);

String ch=mm.substring(p,p+1);

//System.out.println(m1);

//System.out.println(m2);

//System.out.println(ch);

if(ch.equals("+"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1+n2;

String su=String.valueOf(sum);

tex.setText(su);

}

if(ch.equals("-"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1-n2;

String su=String.valueOf(sum);

tex.setText(su);

}

if(ch.equals("*"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1*n2;

String su=String.valueOf(sum);

tex.setText(su);

}

if(ch.equals("/"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1/n2;

String su=String.valueOf(sum);

tex.setText(su);

}

}

if(e.getSource()==qingling)

{StringBuffer kk=new StringBuffer();

m=kk;

tex.setText("0");

// System.out.println(mm);

}

if(e.getSource()==kaifang)

{

String t=tex.getText();

float num=Float.parseFloat(t);

double nub=Math.sqrt(num);

tex.setText(String.valueOf(nub));

}

}

}

50行左右的java程序代码,要求代码内含有两个循环,两个函数,50行,急需

随便给你写了一个

package com.wys.util;

import java.util.ArrayList;

import java.util.List;

import java.util.Random;

public class Test {

public static ListInteger smallNumbers,largeNumbers;

public static int sum1 = 0,sum2 = 0;

public static void main(String[] args) {

smallNumbers = new ArrayListInteger();

largeNumbers = new ArrayListInteger();

run();

}

public static void run() {

int i = 0;

for (int j = 0; j 50; j++) {

Random rand = new Random();

i = rand.nextInt(1000);

if (i500) {

small(i);

}else{

large(i);

}

}

System.out.println("随机输出的50个数字中:");

System.out.println("大于500的数（包括500）共有"+largeNumbers.size()+"个");

System.out.print("他们是"+largeNumbers);

System.out.println();

System.out.println("他们的和是"+sum1);

System.out.println("小于500的数共有"+smallNumbers.size()+"个");

System.out.print("他们是"+smallNumbers);

System.out.println();

System.out.println("他们的和是"+sum2);

}

private static void large(int number) {

largeNumbers.add(number);

sum1 += number;

}

private static void small(int number) {

smallNumbers.add(number);

sum2 += number;

}

}