java中"x="+x="y="+y什么意思啊

Question

class TestP{
public static void main(String args[]){
int x=5, y=32;
float a=8.6f,b=4.0F;
System.ou.println("x="+x+="y="+y);
System.out.println("\ta="+a+"\tb"+b);
System.out.println("\nx+y+"+x+y+"\ta*b="+a*b);
}
}
System.ou.println("x="+x+="y="+y);
System.out.println("\ta="+a+"\tb"+b);
System.out.println("\nx+y+"+x+y+"\ta*b="+a*b);
这三个刮号中的是什么意思啊，小弟刚学java，麻烦大哥大姐帮我解释下，详细点，不甚感激啊~~~~~~

Answer 1

...不解释