语法错误，在java中插入“EnumBody”和“枚举标识符”

如果有人能帮忙，我无法弄清楚我的代码有什么问题，为什么它告诉我这些？它给我一个toString方法的错误...为什么它给我插入枚举正文和标识符？谢谢语法错误，在java中插入“EnumBody”和“枚举标识符”

import java.lang.String; 

    public class Circle extends Shape { 
    private double radius; 

    public Circle(double theRadius){ 
    super(); 
    if (theRadius <= 0.0) 
     setRadius(Shape.DEFAULT_SIZE); 
    else 
     setRadius(theRadius); 
} 



public double getSurfaceArea(){ 

    return this.radius * this.radius * Math.PI; 
} 

public double getPeremeter(){ 
    ; 
    return 2 * this.radius + Math.PI; 
} 

public double getRadius(){ 
    return this.radius; 

} 

public void setRadius(double theRadius) { 
    if(theRadius <= 0) 
     return; 
    this.radius = theRadius; 
} 

@Override 
public double getPerimeter() { 
    // TODO Auto-generated method stub 
    return 0; 



    public String toString() { 
     return "Circle Surface Area "+getSurfaceArea()+", Circle Peremeter "  +getPerimeter(); 
    } 
} 

@Override 
public double getSizeAmount() { 
    // TODO Auto-generated method stub 
    return 0; 
} 
    }

主类

import javax.swing.JOptionPane; 
import java.text.DecimalFormat; 



public class ShapeApp { 


public static <RectangularPrism> void main(String[] args) { 



    int x = 0; 
    Triangle triangleObjects[] = new Triangle[ 3 ]; 

    triangleObjects[ 0 ] = new Rectangle("3.5","4.6"); 
    triangleObjects[ 1 ] = new Rectangle("3","2"); 

    triangleObjects[ 2 ] = new Circle(0); 

    System.out.println("List of all Shapes:\n"); 
    do{ 
    try{ 
     for(Triangle currentTriangle : triangleObjects) { 
     String msg = currentTriangle.getSurfaceArea() +","+ currentTriangle.getPerimeter(); 
     JOptionPane.showMessageDialog(null, "Message", msg, JOptionPane.INFORMATION_MESSAGE); 
     x=2; 
    } 

    }catch(Exception e) { 

    } 

}while(x==1); 


    } 


}

错误

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
Syntax error on token "String", @ expected 
Syntax error, insert "enum Identifier" to complete EnumHeaderName 
Syntax error, insert "EnumBody" to complete BlockStatement 

at Circle.getPerimeter(Circle.java:44) 
at ShapeApp.main(ShapeApp.java:80)

来源

2012-09-07 Angela

是什么类形是什么样子？并且在Circle类中缺少getPerimeter（）的括号，不确定是否会导致所有错误？ – centic

看看你getPerimeter方法：

@Override 
public double getPerimeter() { 
    // TODO Auto-generated method stub 
    return 0; 



    public String toString() { 
     return "Circle Surface Area "+getSurfaceArea()+", Circle Peremeter " 
       +getPerimeter(); 
    } 
}

你试图声明toString方法内getPerimeter方法。

代码的缩进应该给你一个提示 - 这是为什么适当地缩进代码很重要的一个原因。你应该有：

@Override 
public double getPerimeter() { 
    // TODO Auto-generated method stub 
    return 0; 
}  

@Override 
public String toString() { 
    return "Circle Surface Area " + getSurfaceArea() + ", Circle Perimeter "  
     + getPerimeter(); 
}

来源

2012-09-07 07:24:01

@Override 
public double getPerimeter() { 
    // TODO Auto-generated method stub 
    return 0; 



    public String toString() { 
     return "Circle Surface Area "+getSurfaceArea()+", Circle Peremeter "  +getPerimeter(); 
    } 
}

应分两个分开：

@Override 
public double getPerimeter() { 
    // TODO Auto-generated method stub 
    return 0; 
} 

@Override 
public String toString() { 
      return "Circle Surface Area "+getSurfaceArea()+", Circle Peremeter "  +getPerimeter(); 
     }

来源

2012-09-07 07:24:49

语法错误，在java中插入“EnumBody”和“枚举标识符”

回答

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