顯示圖像的RGB數字

Question

我需要顯示所選圖像中每個像素的所有RGB數字，每個數字用空格分隔，並在圖像的每一行之後使用println（break）。我已經想出並編寫了代碼來返回所有的RGB數字，但我不知道如何在每行之後分解。這是到目前爲止我的代碼..

public void getColor() 
{ 
    System.out.println("This picture's dimensions are: "+this.getWidth()+" by "+this.getHeight()); 
    for (int row=0; row < this.getHeight(); row++) // gives the number of rows 
    { 
    for (int col=0; col < this.getWidth(); col++)// gives the number of columns 
    { 
     Pixel pix = this.getPixel(col,row);   
     System.out.print(pix.getRed()+" "+pix.getGreen()+" "+pix.getBlue()+" "); 
    } // end of inner loop 
    }// end of outer loop 
} // end of method 

Answer 1

你需要把換行最裏面的外面循環，因爲你希望它的每一行完成後運行。

public void getColor() 
{ 
    System.out.println("This picture's dimensions are: "+this.getWidth()+" by "+this.getHeight()); 
    for (int row=0; row < this.getHeight(); row++) // gives the number of rows 
    { 

    for (int col=0; col < this.getWidth(); col++)// gives the number of columns 
    { 
     Pixel pix = this.getPixel(col,row);   
     System.out.print(pix.getRed()+" "+pix.getGreen()+" "+pix.getBlue()+" "); 
    } // end of inner loop 

    //After this ^^^ for loop runs, you've gone over the whole row. 
    System.out.println(); 
    }// end of outer loop 
} // end of method 

Answer 2

只是由內環和外環之間插入print語句添加換行符每行的末尾。

public void getColor() 
{ 
    System.out.println("This picture's dimensions are: "+this.getWidth()+" by  "+this.getHeight()); 
    for (int row=0; row < this.getHeight(); row++) // gives the number of rows 
    { 
    for (int col=0; col < this.getWidth(); col++)// gives the number of columns 
    { 
     Pixel pix = this.getPixel(col,row);   
     System.out.print(pix.getRed()+" "+pix.getGreen()+" "+pix.getBlue()+" "); 
    } // end of inner loop 
    System.out.print("\n"); //added line break to end of line. 
    }// end of outer loop 
} // end of method 

Answer 3

將這個山坳的循環之後：

是System.out.print（System.getProperty（ 「line.separator」））;

看到這個頁面： http://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html