摘要：
public class juxing { int a; int b; juxing(int a,int b) { System.out.println("矩形面积s=" + (a*b)); } } public class juxing1 { public static void main(Str 阅读全文
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摘要：
public class juxing { int a; int b; juxing(int a,int b) { System.out.println("矩形面积s=" + (a*b)); } } public class juxing1 { public static void main(Str 阅读全文
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