Commit 67c209b

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状态模式

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Lines changed: 25 additions & 0 deletions

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	`1`	`+package com.java.design.state;`
	`2`	`+`
	`3`	`+/**`
	`4`	`+ * 定义状态`
	`5`	`+ *`
	`6`	`+ * @author Administrator`
	`7`	`+ *`
	`8`	`+ */`
	`9`	`+public class Context {`
	`10`	`+`
	`11`	`+ private State state;`
	`12`	`+`
	`13`	`+ public State getState() {`
	`14`	`+ return state;`
	`15`	`+ }`
	`16`	`+`
	`17`	`+ public void setState(State state) {`
	`18`	`+ this.state = state;`
	`19`	`+ }`
	`20`	`+`
	`21`	`+ public String stateMessage() {`
	`22`	`+ return state.getState();`
	`23`	`+ }`
	`24`	`+`
	`25`	`+}`

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	`1`	`+package com.java.design.state;`
	`2`	`+`
	`3`	`+public class Rain implements State {`
	`4`	`+`
	`5`	`+ @Override`
	`6`	`+ public String getState() {`
	`7`	`+`
	`8`	`+ return "Rain";`
	`9`	`+ }`
	`10`	`+}`

Lines changed: 17 additions & 0 deletions

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	`1`	`+package com.java.design.state;`
	`2`	`+`
	`3`	`+/**`
	`4`	`+ * 状态接口`
	`5`	`+ *`
	`6`	`+ * @author Administrator`
	`7`	`+ *`
	`8`	`+ */`
	`9`	`+public interface State {`
	`10`	`+`
	`11`	`+ /**`
	`12`	`+ * 获取状态`
	`13`	`+ *`
	`14`	`+ * @return`
	`15`	`+ */`
	`16`	`+ String getState();`
	`17`	`+}`

Lines changed: 27 additions & 0 deletions

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	`1`	`+package com.java.design.state;`
	`2`	`+`
	`3`	`+/**`
	`4`	`+ * 状态模式 ----->`
	`5`	`+ * 定义对象间的一种一对多的依赖关系,当一个对象的状态发生改变时,所有依赖于它的对象都得到通知并被自动更新。允许一个对象在其内部状态改变时改变它的行为`
	`6`	`+ * 对象看起来似乎修改了它的类`
	`7`	`+ *`
	`8`	`+ * @author Administrator`
	`9`	`+ *`
	`10`	`+ */`
	`11`	`+public class StatePattern {`
	`12`	`+`
	`13`	`+ public static void main(String[] args) {`
	`14`	`+`
	`15`	`+ Context context = new Context();`
	`16`	`+ context.setState(new SunShine());`
	`17`	`+ String messageSun = context.stateMessage();`
	`18`	`+ System.out.println(messageSun);`
	`19`	`+`
	`20`	`+ System.out.println("----------------");`
	`21`	`+`
	`22`	`+ context.setState(new Rain());`
	`23`	`+ String messageRain = context.stateMessage();`
	`24`	`+ System.out.println(messageRain);`
	`25`	`+ }`
	`26`	`+`
	`27`	`+}`

Lines changed: 10 additions & 0 deletions

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	`1`	`+package com.java.design.state;`
	`2`	`+`
	`3`	`+public class SunShine implements State {`
	`4`	`+`
	`5`	`+ @Override`
	`6`	`+ public String getState() {`
	`7`	`+`
	`8`	`+ return "SunShine";`
	`9`	`+ }`
	`10`	`+}`

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