System.out.println(x+" "+y);括号里德X+是什么意思

system.out.println System.out.println(x=+x+,y=+y); System.out.println(x+ +y);括号里德X+是什么意思 system.out.println是什么意思啊. java 中System.out.println()是什么意思? System.out.println(4 | 3) 结果是多少? System.out.println(Max+ +Min）是什么意思 System.out.println(x+y=+(x+y));是对的 if 1991 System.out.println (Child);elseSystem.out.println (everything is just beginning);end求翻译 System.out.println( +y+=+x+*+x+ +x+*+x+=+y);解释一下这段话什么意思 为什么System.out.println(x=+x+,y=+y);括号里面怎么理解啊?为什么要这样写? Math.round?大侠们帮忙.public class Test {/*** @param args*/public static void main(String[] args) {System.out.println(Math.round(-11.5));System.out.println(Math.round(-12.4));System.out.println(Math.round(-12.5));System.out.println(Math.round(-1 java 中 System.out.println( sdfsdf  sdfs );  是什么意思? System.out.println(s1 = + s1); 为什么要这么写? int a = 8,b = 9; if (a = b){ System.out.println(true); }else{ System.out.println(false); } int m = 1; int n = 2; double y = 2.0; System.out.println(m + n); //3 System.out.println(m - n); //-1int m = 1;int n = 2;double y = 2.0;System.out.println(m + n); //3System.out.println(m - n); //-1System.out.println(m * n); //2System.out.println(m / n public class Ex3{int x;public static void main(String ar[])throws Exception{int y=0;Ex3 c=new Ex3();try{y=3/c.x;y=y+1;}catch(Exception e){System.out.println(errors occur!);System.out.println(getMessage=+e.getMessage());System.out.println(toStrin int x=78; int y=0; while(x>0){ y++; }else x=x&(x-1); System.out.println(y=Interger.toString()+y)