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如何獲取值方法內部類的類外方法內的值？

如果我在 ?方法內部類外的方法中 ?定義一個變量；如何獲得? public ?void showInner() { int i =52; class InnerClass{ private int s = 325; private void showInnerClass() { System.out.println("方法內部類使用："+s); System.out.println("此處我改如何獲得 ? ?i 的值"); ?}} InnerClass ic = new InnerClass(); ic.showInnerClass();}

晨習

2016-12-31

源自：Java入門第二季升級版 7-8

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3 回答

晨習提問者
2017-01-02

package?com.my.baseTest;

/**
?*?JavaOutInnerClass?的測試
?*?@author?my129
?*
?*/
public?class?JavaOutInnerClassTest{
?????public??void?showInner()?{?
?????????/**
???????????*?<h4>i?字段?:該字段?用?final?修飾后，可在方法內部類中調用；</h4>
???????????*/
????	?final??int?i?=52;?
?????????class?InnerClass{
?????????????private?int?s?=?325;?
?????????????private?void?showInnerClass()?{
?????????????????System.out.println("方法內部類使用："+s);?
?????????????????System.out.println("此處我改如何獲得????i?的值"?+?i);??
?????????????????}
?????????????}?
?
?????????????InnerClass?ic?=?new?InnerClass();?
?????????????ic.showInnerClass();
?????}
?????public?static?void?main(String?[]?args){
?????????JavaOutInnerClassTest?hello?=?new?JavaOutInnerClassTest();
?????????hello.showInner();
????}??
}

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瓦全
2016-12-31

package?com.imooc;
public?class?HelloWorld{
	?public??void?showInner()?{?
		?int?i?=52;?
		?class?InnerClass{
			?private?int?s?=?325;?
			?private?void?showInnerClass()?{
				?System.out.println("方法內部類使用："+s);?
				?System.out.println("此處我改如何獲得????i?的值"?+?i);??
				?}
			?}?

		?????InnerClass?ic?=?new?InnerClass();?
		?????ic.showInnerClass();
	?}
?????public?static?void?main(String?[]?args){
????	?HelloWorld?hello?=?new?HelloWorld();
????	?hello.showInner();
	}	
}