Strings & Arrays

int a[]={1,2,3};

int b[]=a;

a[0]+=1;

a[1]+=1;

System.out.println(b[0]+b[1]+b[2]);

• 8

• 6

• 123

• 233

String a='mango';

String b='MANGO';

System.out.println(a.equals(b));

• error

• true

• false

• nothinng will be printed

String a="mango";

String b="MANGO";

System.out.println(a==b);

• true

• false

• error

• Nothing will be printed

String a=new String("APPLE");

String b=new String("APPLE");

System.out.println(a==b);

• true

• false

• error

• Nothing will be printed

int a[]=new int[3];

a[0]=1;

a[1]=2;

System.out.println(a[0]+a[1]+a[2]);

• 3

• 123

• out of bound error

System.out.println(1+2+""+3+4);

• 334

• 1234

• 10

• 37

String a="12";

for(int i=0;i<a.length();i++){

a+='1';

}

System.out.println(a);

• 121

• 12

• infinite loop

• 31

String a="12";

a.replace('1','2');

System.out.println(a);

• 22

• 12

• 1212

• 11

String in java is _________

• mutable

• immutable

• neither mutable nor immutable

int a[]={1,2,3,4};

System.out.println(a[a.length()-1]);

• 4

• 3

• error

• out of bound