ICSE − Q & A

GUYS instead of writing 
int n = 12;
String n1 = Integer.toString(n);
we can directly write 
String n1 = ""+n;
no need  to write  Integer.toString(n);

Can we use Scanner functions like hasNext() and next() ?

1. give the output
       int a=5;
        a++;
        a-=(a--)-(--a);
         Sopln(a);
              (i got a=-4 while my sir said the answer is a=4. plz give the steps)


2.Name the variables for which the object of the class will have its own distinct copy.
        public class myClass 
         {
            public static int x=3;y=4;
             public int a=2;b=3;}

1.Arrange the operators given below in order of higher to lower precedence:
       i. &&           ii. %          iii.>=        iv.++
2.List the variables from those given below that are composite data types:
      static int x;
      boolean b;
      arr[i]=10;
      private cher ch;
      obj.display();
      String str;

for(int i=3;i<=4;i++){
for(int j=2;j<i;j++){
System.out.print("");}
Sopln("win");


How many times will the loop execute?
Give the output.

1.Arrange the following in descending order of size:char,long,float,boolean
2.write the total bytes required: int a[]={1,2,3,4,5};
3.Give the output
       String a="26,b="100";
        String d=a+b+"200";

Guys i need both the sorts and both the search prgms for strings....
ASAP