Answer Posted / anitha

package com.boa.example.java;

public class NumberTest {

public void swapnum(int a,int b,int c,int d){

for(int x=0;x<=3;x++){
int t1=0;
int t2=0;
int t3=0;

if(x == 0){
t1= b;
t2=c;
t3=d;
}

if(x == 1){
t1= c;
t2=b;
t3=d;
}

if(x == 2){
t1= c;
t2=d;
t3=b;
}
if(x == 3){
t1= b;
t2=d;
t3=c;
}
System.out.println(a+""+t1+""+t2+""+t3 );
}
}

public static void main(String args[]){
int i=1;
int j=2;
int k=3;
int l =4;

NumberTest n = new NumberTest();
n.swapnum(i,j,k,l);
n.swapnum(j,k,l,i);
n.swapnum(k,l,j,i);
n.swapnum(l,k,j,i);
}
}
o/p-1234
1324
1342
1243
2341
2431
2413
2314
3421
3241
3214
3412
4321
4231
4213
4312

Is cout buffered?

691

---

what is deadlock? : Java thread

532

---

What are features of java?

564

---

What is flag in java?

539

---

What is a method header?

554

---

---

Is nullpointerexception checked or unchecked?

559

---

What is serial version uid and its importance in java?

606

---

What is a file pointer?

521

---

What is difference between word and integer?

601

---

What is singleton service?

516

---

which one is more efficient int x; 1. if(x==null) 2.if(null==x) state which one either 1 or 2?

9266

---

Is hashset sorted in java?

672

---

Why collection doesn’t extend cloneable and serializable interfaces?

651

---

Can list be final in java?

491

---

Is it possible to instantiate the abstract class?

542

---