【php收银源码】【源码时代 jpa】【c server源码】java replace源码-皮皮网

【php收银源码】【源码时代 jpa】【c server源码】java replace源码

时间：2024-12-25 14:26:52 分类：焦点

1.ä½¿ç¨javaå¼åä»£ç ç¼è¾å¨(ä½¿ç¨javaå¼åä»£ç ç¼è¾å¨çå¥½å¤)
2.å¦ä½ç¨mavenå°java8åçä»£ç ç¼è¯ä¸ºjava6å¹³å°ç

java replace源码

javaç¼ç¨å¸¸ç¨çè½¯ä»¶æåªäº

å¦ä½ç¨javaç¼åä¸ä¸ªç®åçææ¬ç¼è¾å¨ï¼

importjava.awt.*;\x0d\importjava.awt.event.*;\x0d\importjavax.swing.*;\x0d\importjava.io.*;\x0d\\x0d\publicclassf1extendsFrameimplementsActionListener\x0d\{ \x0d\privateMenuBarmenubar=newMenuBar();\x0d\privateMenufilemenu=newMenu("æä»¶");\x0d\privateMenueditmenu=newMenu("ç¼è¾");\x0d\privateMenuformmenu=newMenu("æ ¼å¼");\x0d\privateMenuItem[]itemf=newMenuItem[4];\x0d\privateMenuItem[]iteme=newMenuItem[6];\x0d\privateMenuItem[]items=newMenuItem[2];\x0d\privateTextAreatf=newTextArea();\x0d\\x0d\publicinta=0,php收银源码b=0,c=0,style=Font.PLAIN,size=;\x0d\publicStrings1="red:"+a+""+"green:"+b+""+"blue"+c,\x0d\s2="å®ä½";\x0d\\x0d\publicString[]sz1={ "","","","","",""},\x0d\sz2={ "å®ä½","é»ä½","å¹¼å","é¶ä¹¦","è¡æ¥·","Arial","Georgia"},\x0d\sz3={ "ç²ä½","å¾æ","å¸¸è§","ç²æ"};\x0d\\x0d\JDialogdialog=newJDialog(this,"åä½",true);\x0d\Containercp=dialog.getContentPane();\x0d\JLabel[]lb=newJLabel[8];\x0d\JLabellb1=newJLabel(s1,JLabel.LEFT);\x0d\JButtonb1=newJButton("ç¡®å®"),\x0d\b2=newJButton("åæ¶");\x0d\JComboBoxjc1=newJComboBox(),\x0d\jc2=newJComboBox(),\x0d\jc3=newJComboBox();\x0d\JScrollBarjb1=newJScrollBar(JScrollBar.HORIZONTAL,,5,0,);\x0d\JScrollBarjb2=newJScrollBar(JScrollBar.HORIZONTAL,,5,0,);\x0d\JScrollBarjb3=newJScrollBar(JScrollBar.HORIZONTAL,,5,0,);

ä¸.é«äº®çåå®¹:

éè¦é«äº®çåå®¹æ:

1.å³é®å,å¦public,int,trueç.

2.è¿ç®ç¬¦,å¦+,-,*,/ç

3.æ°å

4.é«äº®åç¬¦ä¸²,å¦"exampleofstring"

5.é«äº®åè¡æ³¨é

6.é«äº®å¤è¡æ³¨é

äº.å®ç°é«äº®çæ ¸å¿æ¹æ³:

StyledDocument.setCharacterAttributes(intoffset,intlength,AttributeSets,booleanreplace)

ä¸.ææ¬ç¼è¾å¨éæ©.

Javaä¸æä¾çå¤è¡ææ¬ç¼è¾å¨æ:JTextComponent,JTextArea,JTextPane,JEditorPaneç,é½å¯ä»¥ä½¿ç¨.ä½æ¯å ä¸ºè¯æ³çè²ä¸ææ¬è¦ä½¿ç¨å¤ç§é£æ ¼çæ ·å¼,æä»¥è¿äºææ¬ç¼è¾å¨çdocumentè¦ä½¿ç¨StyledDocument.

JTextAreaä½¿ç¨çæ¯PlainDocument,æ¤documentä¸è½è¿è¡å¤ç§æ ¼å¼ççè².

JTextPane,JEditorPaneä½¿ç¨çæ¯StyledDocument,é»è®¤å°±å¯ä»¥ä½¿ç¨.

ä¸ºäºå®ç°è¯æ³çè²,å¯ä»¥ç»§æ¿èªDefaultStyledDocument,è®¾ç½®å¶ä¸ºè¿äºææ¬ç¼è¾å¨çdocumet,æèä¹å¯ä»¥ç´æ¥ä½¿ç¨JTextPane,JEditorPaneæ¥å.ä¸ºäºæ¹ä¾¿,è¿éå°±ç´æ¥ä½¿ç¨JTextPaneäº.

å.ä½æ¶è¿è¡çè².

ä¸ºäºçè§å°ææ¬çåå®¹åçäºåå,è¦ç»documentæ·»å ä¸ä¸ªDocumentListenerçå¬å¨,å¨ä»çremoveUpdateåinsertUpdateä¸è¿è¡çè²å¤ç.

@Override

publicvoidchangedUpdate(DocumentEvente){

}

@Override

publicvoidinsertUpdate(DocumentEvente){

try{

colouring((StyledDocument)e.getDocument(),e.getOffset(),e.getLength());

}catch(BadLocationExceptione1){

e1.printStackTrace();

}

@Override

publicvoidremoveUpdate(DocumentEvente){

try{

colouring((StyledDocument)e.getDocument(),e.getOffset(),0);

}catch(BadLocationExceptione1){

e1.printStackTrace();

}

äº.çè²èå´:

pos:æååååæ çä½ç½®.

len:æååçåç¬¦æ°.

ä¾å¦æå³é®åpublic,int

åè¯"publicint",å¨"public"å"int"ä¸æå¥ä¸ä¸ªç©ºæ ¼ååæ"publicint",ä¸ä¸ªåè¯åæäºä¸¤ä¸ª,è¿æ¶å¯¹"public"å"int"è¿è¡çè².

çè²èå´æ¯publicä¸pçä½ç½®åintä¸tçä½ç½®å 1,å³æ¯posåé¢åè¯å¼å§çä¸æ åpos+lenå¼å§åè¯ç»æçä¸æ .æä»¥ä¸ä¾ä¸è¦çè²çèå´æ¯"publicint".

æä¾äºæ¹æ³indexOfWordStartæ¥åå¾posååè¯å¼å§çä¸æ ,æ¹æ³indexOfWordEndæ¥åå¾posååè¯ç»æçä¸æ .

publicintindexOfWordStart(Documentdoc,intpos)throwsBadLocationException{

//ä»poså¼å§ååæ¾å°ç¬¬ä¸ä¸ªéåè¯åç¬¦.

for(;pos0isWordCharacter(doc,pos-1);--pos);

returnpos;

}

publicintindexOfWordEnd(Documentdoc,intpos)throwsBadLocationException{

//ä»poså¼å§ååæ¾å°ç¬¬ä¸ä¸ªéåè¯åç¬¦.

for(;isWordCharacter(doc,pos);++pos);

returnpos;

}

ä¸ä¸ªåç¬¦æ¯åè¯çææåç¬¦:æ¯åæ¯,æ°å,ä¸åçº¿.

publicbooleanisWordCharacter(Documentdoc,intpos)throwsBadLocationException{

charch=getCharAt(doc,pos);//åå¾å¨ææ¡£ä¸posä½ç½®å¤çåç¬¦

if(Character.isLetter(ch)||Character.isDigit(ch)||ch=='_'){ returntrue;}

returnfalse;

}

æä»¥çè²çèå´æ¯[start,end]:

intstart=indexOfWordStart(doc,pos);

intend=indexOfWordEnd(doc,pos+len);

å.å³é®åçè².

publicvoidcolouring(StyledDocumentdoc,intpos,intlen)throwsBadLocationException{

//åå¾æå¥æèå é¤åå½±åå°çåè¯.

//ä¾å¦"public"å¨båæå¥ä¸ä¸ªç©ºæ ¼,å°±åæäº:"public",è¿æ¶å°±æä¸¤ä¸ªåè¯è¦å¤ç:"pub"å"lic"

//è¿æ¶è¦åå¾çèå´æ¯pubä¸påé¢çä½ç½®ålicä¸cåé¢çä½ç½®

intstart=indexOfWordStart(doc,pos);

intend=indexOfWordEnd(doc,pos+len);

charch;

while(startend){

ch=getCharAt(doc,start);

if(Character.isLetter(ch)||ch=='_'){

//å¦ææ¯ä»¥åæ¯æèä¸åçº¿å¼å¤´,è¯´ææ¯åè¯

//posä¸ºå¤çåçæåä¸ä¸ªä¸æ

start=colouringWord(doc,start);

}else{

//SwingUtilities.invokeLater(newColouringTask(doc,pos,wordEnd-pos,normalStyle));

++start;

}

publicintcolouringWord(StyledDocumentdoc,intpos)throwsBadLocationException{

intwordEnd=indexOfWordEnd(doc,pos);

Stringword=doc.getText(pos,wordEnd-pos);//è¦è¿è¡çè²çåè¯

if(keywords.contains(word)){

//å¦ææ¯å³é®å,å°±è¿è¡å³é®åççè²,å¦åä½¿ç¨æ®éççè².

//è¿éæä¸ç¹è¦æ³¨æ,å¨insertUpdateåremoveUpdateçæ¹æ³è°ç¨çè¿ç¨ä¸,ä¸è½ä¿®æ¹docçå±æ§.

SwingUtilities.invokeLater(newColouringTask(doc,pos,wordEnd-pos,keywordStyle));

}else{

SwingUtilities.invokeLater(newColouringTask(doc,pos,wordEnd-pos,normalStyle));

}

returnwordEnd;

}

å ä¸ºå¨insertUpdateåremoveUpdateæ¹æ³ä¸ä¸è½ä¿®æ¹documentçå±æ§,æä»¥çè²çä»»å¡æ¾å°è¿ä¸¤ä¸ªæ¹æ³å¤é¢,æä»¥ä½¿ç¨äºSwingUtilities.invokeLateræ¥å®ç°.

privateclassColouringTaskimplementsRunnable{

privateStyledDocumentdoc;

privateStylestyle;

privateintpos;

privateintlen;

publicColouringTask(StyledDocumentdoc,intpos,intlen,Stylestyle){

this.doc=doc;

this.pos=pos;

this.len=len;

this.style=style;

}

publicvoidrun(){

try{

//è¿éå°±æ¯å¯¹åç¬¦è¿è¡çè²

doc.setCharacterAttributes(pos,len,style,true);

}catch(Exceptione){ }

}

ä¸:æºç

importjava.awt.Color;

importjava.util.HashSet;

importjava.util.Set;

importjavax.swing.JFrame;

importjavax.swing.JTextPane;

importjavax.swing.SwingUtilities;

importjavax.swing.event.DocumentEvent;

importjavax.swing.event.DocumentListener;

importjavax.swing.text.BadLocationException;

importjavax.swing.text.Document;

importjavax.swing.text.Style;

importjavax.swing.text.StyleConstants;

importjavax.swing.text.StyledDocument;

publicclassHighlightKeywordsDemo{

publicstaticvoidmain(String[]args){

JFrameframe=newJFrame();

JTextPaneeditor=newJTextPane();

editor.getDocument().addDocumentListener(newSyntaxHighlighter(editor));

frame.getContentPane().add(editor);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setSize(,);

frame.setVisible(true);

}

*å½ææ¬è¾å¥åºçæåç¬¦æå¥æèå é¤æ¶,è¿è¡é«äº®.

*è¦è¿è¡è¯æ³é«äº®,ææ¬è¾å¥ç»ä»¶çdocumentè¦æ¯styleddocumentæè¡.æä»¥ä¸è¦ç¨JTextArea.å¯ä»¥ä½¿ç¨JTextPane.

*@authorBiao

classSyntaxHighlighterimplementsDocumentListener{

privateSetStringkeywords;

privateStylekeywordStyle;

privateStylenormalStyle;

publicSyntaxHighlighter(JTextPaneeditor){

//åå¤çè²ä½¿ç¨çæ ·å¼

keywordStyle=((StyledDocument)editor.getDocument()).addStyle("Keyword_Style",null);

normalStyle=((StyledDocument)editor.getDocument()).addStyle("Keyword_Style",null);

StyleConstants.setForeground(keywordStyle,Color.RED);

StyleConstants.setForeground(normalStyle,Color.BLACK);

//åå¤å³é®å

keywords=newHashSetString();

keywords.add("public");

keywords.add("protected");

keywords.add("private");

keywords.add("_int9");

keywords.add("float");

keywords.add("double");

}

publicvoidcolouring(StyledDocumentdoc,intpos,intlen)throwsBadLocationException{

//åå¾æå¥æèå é¤åå½±åå°çåè¯.

//ä¾å¦"public"å¨båæå¥ä¸ä¸ªç©ºæ ¼,å°±åæäº:"public",è¿æ¶å°±æä¸¤ä¸ªåè¯è¦å¤ç:"pub"å"lic"

//è¿æ¶è¦åå¾çèå´æ¯pubä¸påé¢çä½ç½®ålicä¸cåé¢çä½ç½®

intstart=indexOfWordStart(doc,pos);

intend=indexOfWordEnd(doc,pos+len);

charch;

while(startend){

ch=getCharAt(doc,start);

if(Character.isLetter(ch)||ch=='_'){

//å¦ææ¯ä»¥åæ¯æèä¸åçº¿å¼å¤´,è¯´ææ¯åè¯

//posä¸ºå¤çåçæåä¸ä¸ªä¸æ

start=colouringWord(doc,start);

}else{

SwingUtilities.invokeLater(newColouringTask(doc,start,1,normalStyle));

++start;

}

*å¯¹åè¯è¿è¡çè²,å¹¶è¿ååè¯ç»æçä¸æ .

*@paramdoc

*@parampos

*@return

*@throwsBadLocationException

publicintcolouringWord(StyledDocumentdoc,intpos)throwsBadLocationException{

intwordEnd=indexOfWordEnd(doc,pos);

Stringword=doc.getText(pos,wordEnd-pos);

if(keywords.contains(word)){

//å¦ææ¯å³é®å,å°±è¿è¡å³é®åççè²,å¦åä½¿ç¨æ®éççè².

//è¿éæä¸ç¹è¦æ³¨æ,å¨insertUpdateåremoveUpdateçæ¹æ³è°ç¨çè¿ç¨ä¸,ä¸è½ä¿®æ¹docçå±æ§.

SwingUtilities.invokeLater(newColouringTask(doc,pos,wordEnd-pos,keywordStyle));

}else{

SwingUtilities.invokeLater(newColouringTask(doc,pos,wordEnd-pos,normalStyle));

}

returnwordEnd;

}

å¦ä½ç¨mavenå°java8åçä»£ç ç¼è¯ä¸ºjava6å¹³å°ç

ããå¨æç¼è¯Javaæºæä»¶

ãã public class CompilerTest {

ãã public static void main(String[] args) throws Exception {

ãã String source = "public class Main { public static void main(String[] args) { System.out.println(\"Hello World!\");} }";

ãã JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();

ãã StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);

ãã StringSourceJavaObject sourceObject = newCompilerTest.StringSourceJavaObject("Main", source);

ãã Iterable< extends JavaFileObject> fileObjects = Arrays.asList(sourceObject);

ãã CompilationTask task = compiler.getTask(null, fileManager, null,null, null, fileObjects);

ãã boolean result = task.call();

ãã if (result) {

ãã System.out.println("ç¼è¯æåã");

ãã }

ãã

ãã static class StringSourceJavaObject extends SimpleJavaFileObject {

ãã

ãã private String content = null;

ãã public StringSourceJavaObject(String name, String content) ?throwsURISyntaxException {

ãã super(URI.create("string:///" + name.replace('.','/') + Kind.SOURCE.extension), Kind.SOURCE);

ãã this.content = content;

ãã }

ãã

ãã public CharSequence getCharContent(boolean ignoreEncodingErrors) ?throws IOException {

ãã return content;

ãã }

ãã private static double calculate(String expr) throws CalculationException {

ãã String className = "CalculatorMain";

ãã String methodName = "calculate";

ãã String source = "public class " + className

ãã + " { public static double " + methodName + "() { return " + expr +"; } }";

ãã //çç¥å¨æç¼è¯Javaæºä»£ç çç¸å³ä»£ç ï¼åè§ä¸ä¸è

ãã boolean result = task.call();

ãã if (result) {

ãã ClassLoader loader = Calculator.class.getClassLoader();

ãã try {

ãã Class<?> clazz = loader.loadClass(className);

ãã Method method = clazz.getMethod(methodName, new Class<?>[] { });

ãã Object value = method.invoke(null, new Object[] { });

ãã return (Double) value;

ãã } catch (Exception e) {

ãã throw new CalculationException("åé¨éè¯¯ã");

ãã }

ãã } else {

ãã throw new CalculationException("éè¯¯çè¡¨è¾¾å¼ã");

ãã }

ããJavaåèä»£ç å¢å¼º

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【php收银源码】【源码时代 jpa】【c server源码】java replace源码

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