Commit 9f97bf1

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deeper

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update composite demo

1 parent dbba1d1 commit 9f97bf1Copy full SHA for 9f97bf1

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Lines changed: 27 additions & 0 deletions

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	`1`	`+package com.ruoxu.pattern.composite.demo;`
	`2`	`+`
	`3`	`+import java.util.ArrayList;`
	`4`	`+import java.util.List;`
	`5`	`+`
	`6`	`+public abstract class AbstractFile { // 文件夹或者文件`
	`7`	`+ private String name;`
	`8`	`+ protected List<AbstractFile> files = new ArrayList<>();`
	`9`	`+`
	`10`	`+ public AbstractFile(String name) {`
	`11`	`+ this.name = name;`
	`12`	`+ }`
	`13`	`+`
	`14`	`+ public String getName(){`
	`15`	`+ return name;`
	`16`	`+ }`
	`17`	`+`
	`18`	`+ public abstract void addFile(AbstractFile file);`
	`19`	`+`
	`20`	`+ public abstract void rmFile(AbstractFile file);`
	`21`	`+`
	`22`	`+ public abstract void clear();`
	`23`	`+`
	`24`	`+ public abstract void print();`
	`25`	`+`
	`26`	`+ public abstract List<AbstractFile> getFiles();`
	`27`	`+}`

Lines changed: 22 additions & 0 deletions

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	`1`	`+package com.ruoxu.pattern.composite.demo;`
	`2`	`+`
	`3`	`+public class Demo {`
	`4`	`+ public static void main(String[] args) {`
	`5`	`+ AbstractFile disk = new Folder("F:");`
	`6`	`+`
	`7`	`+ // F盘根目录有一个文件 test.py`
	`8`	`+ disk.addFile(new File("test.py"));`
	`9`	`+`
	`10`	`+ // F盘下面有2个目录,Windows,Program File`
	`11`	`+ AbstractFile windowsFolder = new Folder("Windows");`
	`12`	`+ windowsFolder.addFile(new File("date.log"));`
	`13`	`+`
	`14`	`+ AbstractFile ProgramFileFolder = new Folder("Program File");`
	`15`	`+ ProgramFileFolder.addFile(new File("java.exe"));`
	`16`	`+`
	`17`	`+ disk.addFile(windowsFolder);`
	`18`	`+ disk.addFile(ProgramFileFolder);`
	`19`	`+`
	`20`	`+ disk.print();`
	`21`	`+ }`
	`22`	`+}`

Lines changed: 36 additions & 0 deletions

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`@@ -0,0 +1,36 @@`
	`1`	`+package com.ruoxu.pattern.composite.demo;`
	`2`	`+`
	`3`	`+import java.util.List;`
	`4`	`+`
	`5`	`+public class File extends AbstractFile{`
	`6`	`+`
	`7`	`+ public File(String name) {`
	`8`	`+ super(name);`
	`9`	`+ }`
	`10`	`+`
	`11`	`+ @Override`
	`12`	`+ public void addFile(AbstractFile file) {`
	`13`	`+ throw new UnsupportedOperationException("文件对象不支持该操作");`
	`14`	`+ }`
	`15`	`+`
	`16`	`+ @Override`
	`17`	`+ public void rmFile(AbstractFile file) {`
	`18`	`+ throw new UnsupportedOperationException("文件对象不支持该操作");`
	`19`	`+ }`
	`20`	`+`
	`21`	`+ @Override`
	`22`	`+ public void clear() {`
	`23`	`+ throw new UnsupportedOperationException("文件对象不支持该操作");`
	`24`	`+ }`
	`25`	`+`
	`26`	`+ @Override`
	`27`	`+ public void print() {`
	`28`	`+ System.out.print(getName());`
	`29`	`+ }`
	`30`	`+`
	`31`	`+ @Override`
	`32`	`+ public List<AbstractFile> getFiles() {`
	`33`	`+ throw new UnsupportedOperationException("文件对象不支持该操作");`
	`34`	`+ }`
	`35`	`+`
	`36`	`+}`

Lines changed: 46 additions & 0 deletions

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	`1`	`+package com.ruoxu.pattern.composite.demo;`
	`2`	`+`
	`3`	`+import java.util.Iterator;`
	`4`	`+import java.util.List;`
	`5`	`+`
	`6`	`+public class Folder extends AbstractFile{`
	`7`	`+`
	`8`	`+ public Folder(String name) {`
	`9`	`+ super(name);`
	`10`	`+ }`
	`11`	`+`
	`12`	`+ @Override`
	`13`	`+ public void addFile(AbstractFile file) {`
	`14`	`+ files.add(file);`
	`15`	`+ }`
	`16`	`+`
	`17`	`+ @Override`
	`18`	`+ public void rmFile(AbstractFile file) {`
	`19`	`+ files.remove(file);`
	`20`	`+ }`
	`21`	`+`
	`22`	`+ @Override`
	`23`	`+ public void clear() {`
	`24`	`+ files.clear();`
	`25`	`+ }`
	`26`	`+`
	`27`	`+ @Override`
	`28`	`+ public void print() {`
	`29`	`+ System.out.print(getName() + "(" );`
	`30`	`+`
	`31`	`+ Iterator<AbstractFile> iterator = files.iterator();`
	`32`	`+ while(iterator.hasNext()){`
	`33`	`+ AbstractFile file = iterator.next();`
	`34`	`+ file.print();`
	`35`	`+ if(iterator.hasNext()){`
	`36`	`+ System.out.print(", "); // 如果当前元素有下一个,加个逗号。`
	`37`	`+ }`
	`38`	`+ }`
	`39`	`+ System.out.print(")" );`
	`40`	`+ }`
	`41`	`+`
	`42`	`+ @Override`
	`43`	`+ public List<AbstractFile> getFiles() {`
	`44`	`+ return files;`
	`45`	`+ }`
	`46`	`+}`

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