如何在JLabel上显示此程序的输出？

Question

我想在JLabel上显示以下代码的输出。请为此提供一种方法

int[] array=new int[chars.length];
for(aa=0;aa<chars.length;aa++)
{
array[aa]=(int) matrix[aa][e-1];
}
System.out.println("Diagonal Matrix");
for(aa=0;aa<chars.length;aa++)
{
System.out.print(array[aa]+" ");
}
int[] array2=new int[chars.length];
for(aa=0;aa<chars.length;aa++)
{
array2[aa]=array[aa]-chars.length;
}
System.out.println();
System.out.println("Encrypted Code");
for(aa=0;aa<chars.length;aa++)
{
System.out.print(array2[aa]+" ");
}
System.out.println();