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手寫(xiě)識(shí)別代碼java 手寫(xiě)識(shí)別代碼

求高手寫(xiě)個(gè)java代碼?。?!

代碼如下:

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import?java.util.Arrays;

class?Circle?{

private?int?radius;

public?Circle(int?radius)?{

this.radius?=?radius;

}

public?int?getRadius()?{

return?radius;

}

public?void?setRadius(int?radius)?{

this.radius?=?radius;

}

@Override

public?String?toString()?{

return?"Circle?[radius="?+?radius?+?"]";

}

}

public?class?App?{

public?static?void?main(String[]?args)?throws?CloneNotSupportedException?{

//?創(chuàng)建一個(gè)包含5個(gè)元素的數(shù)組

Circle[]?circles?=?{?new?Circle(2),?new?Circle(10),?new?Circle(8),?new?Circle(4),?new?Circle(12)?};?

System.out.println(Arrays.toString(circles));

//?排序

Arrays.sort(circles,?(x,?y)?-?Integer.compare(x.getRadius(),?y.getRadius()));

System.out.println(Arrays.toString(circles));

//?查找半徑為?9?的圓

int?index?=?Arrays.binarySearch(circles,?9,?(x,?y)?-?((Circle)x).getRadius()?-?(int)y);

System.out.println(index?=0???circles[index]?:?"沒(méi)有找到半徑為?9?的圓。");

//?查找半徑為?10?的圓

index?=?Arrays.binarySearch(circles,?10,?(x,?y)?-?((Circle)x).getRadius()?-?(int)y);

System.out.println(index?=0???circles[index]?:?"沒(méi)有找到半徑為?10?的圓。");

//?拷貝數(shù)組

Circle[]?circles2?=?Arrays.copyOf(circles,?circles.length);

System.out.println(Arrays.toString(circles2));

}

}

麻煩高手寫(xiě)2分查找JAVA代碼

花了我將近一個(gè)小時(shí)的時(shí)間擺弄,你還不舍得給分

第一個(gè)類(lèi)

/**************************************************************************

* 該類(lèi)為啟動(dòng)類(lèi),運(yùn)行該類(lèi),將跳出輸入數(shù)組對(duì)話框,輸入的數(shù)字之間用逗號(hào)隔開(kāi),若輸入

* 的不是數(shù)字有可能出現(xiàn)異常,請(qǐng)自己處理。輸入的數(shù)字最大個(gè)數(shù)為100,也可以修改處理

* 更大個(gè)數(shù)的數(shù)組。

**************************************************************************/

package terry.test;

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import java.util.EventListener;

import java.util.StringTokenizer;

public class InputData extends JFrame implements ActionListener

{

Container con=this.getContentPane();

JButton button1=new JButton("確定");

JButton button2=new JButton("取消");

JLabel label=new JLabel("請(qǐng)輸入數(shù)組:");

JTextField text=new JTextField("數(shù)字之間用逗號(hào)隔開(kāi)");

Panel panel1=new Panel();

Panel panel2=new Panel();

@SuppressWarnings("deprecation")

public InputData()

{

super("輸入有序數(shù)據(jù)對(duì)話框");

con.setLayout(new GridLayout(2,1));

panel1.add(label);

panel1.add(text);

con.add(panel1);

button1.addActionListener(this);

panel2.add(button1);

button2.addActionListener(this);

panel2.add(button2);

con.add(panel2);

this.setSize(300,200);

this.show();

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==button1)

{

String dataString=text.getText();//截取寫(xiě)入的數(shù)組,現(xiàn)在還是一個(gè)字符串

ordArray arr=new ordArray(100);//生成排序類(lèi)的實(shí)例;

//以下為處理整個(gè)字符串,轉(zhuǎn)化為整型數(shù)組。

if(dataString!=null)

{

StringTokenizer s=new StringTokenizer(dataString,",");

while(s.hasMoreTokens())

{

int temp=0;

try

{

temp=(new Integer(s.nextToken())).intValue();

}catch(NumberFormatException ex)

{

JOptionPane.showMessageDialog(null, "在數(shù)組中,請(qǐng)輸入整數(shù)值!");

}

arr.insert(temp);

}

}

this.dispose();

new InputSearchApp(arr);

}

}

public static void main(String args[])

{

new InputData();

}

}

第二個(gè)類(lèi)

/**************************************************

* InputData實(shí)例向該類(lèi)的實(shí)例傳遞了orderArray參數(shù)變量*

* *

*/

package terry.test;

import java.awt.Container;

import java.awt.FlowLayout;

import java.awt.GridLayout;

import java.awt.Panel;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JTextField;

public class InputSearchApp extends JFrame implements ActionListener{

Container con=this.getContentPane();

JButton button1=new JButton("確定");

JButton button2=new JButton("取消");

JLabel label=new JLabel("請(qǐng)輸入要查找的數(shù)值:");

JTextField text=new JTextField(10);

ordArray arr=null;

Panel panel1=new Panel();

Panel panel2=new Panel();

public InputSearchApp(ordArray testArray)

{

super("輸入有序數(shù)據(jù)對(duì)話框");

arr=testArray;

con.setLayout(new GridLayout(2,1));

panel1.add(label);

panel1.add(text);

con.add(panel1);

button1.addActionListener(this);

panel2.add(button1);

button2.addActionListener(this);

panel2.add(button2);

con.add(panel2);

this.setSize(200,200);

this.show();

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==button1)

{

String dataString=text.getText();

int searchKey= (new Integer(dataString)).intValue();

boolean success=arr.find(searchKey);

if(success)

{

this.dispose();

JOptionPane.showMessageDialog(null, ("查找到數(shù)據(jù)"+searchKey));

}

else

{

JOptionPane.showMessageDialog(null, ("沒(méi)有查找到數(shù)據(jù)"+searchKey));

}

}

}

}

第三個(gè)類(lèi)2分查找類(lèi)

package terry.test;

public class ordArray {

private int[]a;

private int nElems;

public ordArray(int max)

{

a=new int[max];

nElems=0;

}

public int size()

{

return nElems;

}

public boolean find(int searchKey)

{

return recFind(searchKey,0,nElems-1);

}

private boolean recFind(int searchKey,int lowerBound,int upperBound)

{

int curIn,theindex;

//boolean flag=false;

curIn=(lowerBound+upperBound)/2;

if(a[curIn]==searchKey)

theindex=curIn;

else if(lowerBoundupperBound)

theindex=nElems;

else

{

if(a[curIn]searchKey)

return recFind(searchKey,lowerBound,curIn-1);

else

return recFind(searchKey,curIn+1,upperBound);

}

if(theindex!=this.size())

return true;

else

return false;

}

public void insert(int value)

{

int j;

for(j=0;jnElems;j++)

if(a[j]value)

break;

for(int k=nElems;kj;k--)

a[k]=a[k-1];

a[j]=value;

nElems++;

}

}

怎么用Java制作手寫(xiě)板,如果能提供代碼更好

做什么事都要學(xué)會(huì)GOOGLE。

搜索JAVA記事本。

你新建一個(gè)類(lèi)叫TEST。

import java.awt.Color;

import java.awt.FileDialog;

import java.awt.Font;

import java.awt.Menu;

import java.awt.MenuBar;

import java.awt.MenuItem;

import java.awt.TextArea;

import java.awt.Toolkit;

import java.awt.datatransfer.Clipboard;

import java.awt.datatransfer.DataFlavor;

import java.awt.datatransfer.StringSelection;

import java.awt.datatransfer.Transferable;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.File;

import java.io.FileReader;

import java.io.FileWriter;

import javax.swing.JFrame;

public class Test extends JFrame implements ActionListener {

/**

* Method main

*

*

* @param args

*

*/

MenuBar menuBar = new MenuBar();

Menu file = new Menu("File"), edit = new Menu("Edit"), help = new Menu(

"Help");

MenuItem[] menuItem = { new MenuItem("New"), new MenuItem("Open"),

new MenuItem("Save"), new MenuItem("Exit"),

new MenuItem("Select All"), new MenuItem("Copy"),

new MenuItem("Cut"), new MenuItem("Paste"), new MenuItem("Help") };

TextArea textArea = new TextArea();

String fileName = "NoName";

Toolkit toolKit = Toolkit.getDefaultToolkit();

Clipboard clipboard = toolKit.getSystemClipboard();

// opne and close message dialogs

private FileDialog openFileDialog = new FileDialog(this, "Open File",

FileDialog.LOAD);

private FileDialog saveFileDialog = new FileDialog(this, "Save File",

FileDialog.SAVE);

public static void main(String[] args) {

// TODO: Add your code here

Test MyEdit = new Test();

MyEdit.show();

}

/**

* Method MiniEdit

*

*

*/

public Test() {

// TODO: Add your code here

setTitle("MiniEdit");

setFont(new Font("Times New Roman", Font.PLAIN, 15));

setBackground(Color.white);

setSize(500, 500);

setMenuBar(menuBar);

menuBar.add(file);

menuBar.add(edit);

menuBar.add(help);

for (int i = 0; i 4; i++) {

file.add(menuItem[i]);

edit.add(menuItem[i + 4]);

}

help.add(menuItem[8]);

add(textArea);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

e.getWindow().dispose();

System.exit(0);

}

});

// add actionListener

for (int i = 0; i menuItem.length; i++) {

menuItem[i].addActionListener(this);

}

}

/**

* Method actionPerformed

*

*

* @param e

*

*/

public void actionPerformed(ActionEvent e) {

// TODO: Add your code here

Object eventSource = e.getSource();

if (eventSource == menuItem[0])// newItem

{

textArea.setText("");

}

else if (eventSource == menuItem[1])// OpenItem

{

openFileDialog.show();

fileName = openFileDialog.getDirectory() + openFileDialog.getFile();

if (fileName != null) {

openFile(fileName);

}

}

else if (eventSource == menuItem[2])// SaveItem

{

saveFileDialog.show();

fileName = saveFileDialog.getDirectory() + saveFileDialog.getFile();

if (fileName != null) {

writeFile(fileName);

}

}

else if (eventSource == menuItem[3])// exitItem

{

System.exit(0);

}

else if (eventSource == menuItem[4])// Select All

{

textArea.selectAll();

} else if (eventSource == menuItem[5])// copy

{

String text = textArea.getSelectedText();

StringSelection selection = new StringSelection(text);

clipboard.setContents(selection, null);

}

else if (eventSource == menuItem[6])// cut

{

String text = textArea.getSelectedText();

StringSelection selection = new StringSelection(text);

clipboard.setContents(selection, null);

textArea.replaceText("", textArea.getSelectionStart(), textArea

.getSelectionEnd());

}

else if (eventSource == menuItem[7])// Paste

{

Transferable contents = clipboard.getContents(this);

if (contents == null)

return;

String text;

text = "";

try {

text = (String) contents

.getTransferData(DataFlavor.stringFlavor);

} catch (Exception ex) {

}

textArea.replaceText(text, textArea.getSelectionStart(), textArea

.getSelectionEnd());

} else if (eventSource == menuItem[8]) {

// JOptionPane.showMessageDialog(null,"This is a MiniEdit.");

}

}

// Read file

public void openFile(String fileName) {

try {

File file = new File(fileName);

FileReader readIn = new FileReader(file);

int size = (int) file.length();

int charsRead = 0;

char[] content = new char[size];

while (readIn.ready())

charsRead += readIn.read(content, charsRead, size - charsRead);

readIn.close();

textArea.setText(new String(content, 0, charsRead));

} catch (Exception e) {

System.out.println("Error opening file!");

}

}

// write file

public void writeFile(String fileName) {

try {

File file = new File(fileName);

FileWriter write = new FileWriter(file);

write.write(textArea.getText());

write.close();

} catch (Exception e) {

System.out.println("Error closing file!");

}

}

}

java調(diào)用python,有第三方包gensim,怎么調(diào)用呢,是報(bào)錯(cuò)。求教....

Jython(原JPython),是一個(gè)用Java語(yǔ)言寫(xiě)的Python解釋器。

在沒(méi)有第三方模塊的情況下,通常選擇利用Jython來(lái)調(diào)用Python代碼,

它是一個(gè)開(kāi)源的JAR包,你可以到官網(wǎng)下載

一個(gè)HelloPython程序

import?org.python.util.PythonInterpreter;

public?class?HelloPython?{

public?static?void?main(String[]?args)?{

PythonInterpreter?interpreter?=?new?PythonInterpreter();

interpreter.exec("print('hello')");

}

}

什么是PythonInterpreter?它的中文意思即是“Python解釋器”。我們知道Python程序都是通過(guò)解釋器來(lái)執(zhí)行的,我們?cè)贘ava中創(chuàng)建一個(gè)“解釋器”對(duì)象,模擬Python解釋器的行為,通過(guò)exec("Python語(yǔ)句")直接在JVM中執(zhí)行Python代碼,上面代碼的輸出結(jié)果為:hello

在Jvm中執(zhí)行Python腳本

interpreter.execfile("D:/labs/mytest/hello.py");

如上,將exec改為execfile就可以了。需要注意的是,這個(gè).py文件不能含有第三方模塊,因?yàn)檫@個(gè)“Python腳本”最終還是在JVM環(huán)境下執(zhí)行的,如果有第三方模塊將會(huì)報(bào)錯(cuò):java?ImportError:?No?module?named?xxx

僅在Java中調(diào)用Python編寫(xiě)的函數(shù)

先完成一個(gè)hello.py代碼:

def?hello():

return?'Hello'

在Java代碼中調(diào)用這個(gè)函數(shù):

import?org.python.core.PyFunction;

import?org.python.core.PyObject;

import?org.python.util.PythonInterpreter;

public?class?HelloPython?{

public?static?void?main(String[]?args)?{

PythonInterpreter?interpreter?=?new?PythonInterpreter();

interpreter.execfile("D:/labs/hello.py");

PyFunction?pyFunction?=?interpreter.get("hello",?PyFunction.class);?//?第一個(gè)參數(shù)為期望獲得的函數(shù)(變量)的名字,第二個(gè)參數(shù)為期望返回的對(duì)象類(lèi)型

PyObject?pyObject?=?pyFunction.__call__();?//?調(diào)用函數(shù)

System.out.println(pyObject);

}

}

上面的代碼執(zhí)行結(jié)果為:Hello

即便只是調(diào)用一個(gè)函數(shù),也必須先加載這個(gè).py文件,之后再通過(guò)Jython包中所定義的類(lèi)獲取、調(diào)用這個(gè)函數(shù)。

如果函數(shù)需要參數(shù),在Java中必須先將參數(shù)轉(zhuǎn)化為對(duì)應(yīng)的“Python類(lèi)型”,例如:

__call__(new?PyInteger(a),?new?PyInteger(b))

a,b的類(lèi)型為Java中的int型,還有諸如:PyString(String?string)、PyList(IteratorPyObject?iter)?等。

詳細(xì)可以參考官方的api文檔。

包含第三方模塊的情況:一個(gè)手寫(xiě)識(shí)別程序

這是我和舍友合作寫(xiě)的一個(gè)小程序,完整代碼在這里:

,界面上引用了core?java上的一段代碼。Python代碼是舍友寫(xiě)的,因?yàn)樵赑ython程序中使用了第三方的NumPy模塊,導(dǎo)致無(wú)法通過(guò)Jython執(zhí)行。下面這個(gè)方法純粹是個(gè)人思路,沒(méi)有深入查資料。?核心代碼如下:

import?java.io.*;

class?PyCaller?{

private?static?final?String?DATA_SWAP?=?"temp.txt";

private?static?final?String?PY_URL?=?System.getProperty("user.dir")?+?"\\test.py";

public?static?void?writeImagePath(String?path)?{

PrintWriter?pw?=?null;

try?{

pw?=?new?PrintWriter(new?FileWriter(new?File(DATA_SWAP)));

}?catch?(IOException?e)?{

e.printStackTrace();

}

pw.print(path);

pw.close();

}

public?static?String?readAnswer()?{

BufferedReader?br;

String?answer?=?null;

try?{

br?=?new?BufferedReader(new?FileReader(new?File(DATA_SWAP)));

answer?=?br.readLine();

}?catch?(FileNotFoundException?e)?{

e.printStackTrace();

}?catch?(IOException?e)?{

e.printStackTrace();

}

return?answer;

}

public?static?void?execPy()?{

Process?proc?=?null;

try?{

proc?=?Runtime.getRuntime().exec("python?"?+?PY_URL);

proc.waitFor();

}?catch?(IOException?e)?{

e.printStackTrace();

}?catch?(InterruptedException?e)?{

e.printStackTrace();

}

}

//?測(cè)試碼

public?static?void?main(String[]?args)?throws?IOException,?InterruptedException?{

writeImagePath("D:\\labs\\mytest\\test.jpg");

execPy();

System.out.println(readAnswer());

}

}

實(shí)際上就是通過(guò)Java執(zhí)行一個(gè)命令行指令。

文章標(biāo)題:手寫(xiě)識(shí)別代碼java 手寫(xiě)識(shí)別代碼
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