Write a program to perform all String class and StringBuffer class operation.
AIM: Write
a program to perform all String class and StringBuffer class operation.
CODE: (String)
public class string{
public static void
main(String args[]){
//string constructor
char []s1={'K','H','U','S','H','I'};
String s2=new String(s1);
System.out.println("\n"+s2+" - String
constructor\n");
//string constructor with index number and number of
chars
String s3=new String(s1,2,4);
System.out.println(s3+" - string constructor with
index number and number of chars \n");
//string constructor in string
String s4=new String(s1);
System.out.println(s4+" - String constructor with
string\n");
//String constructor in byte
byte []s5={97,75,78};
String s6=new String(s5);
System.out.println(s6+" - String constructor with
byte array\n");
//String length
System.out.println(s6.length()+" - String
length\n");
//String litral
System.out.println("KHUSHI
PITRODA".length()+" - Length of string with String litral\n");
//String conversion with valueOf
int a=98;
String s7 = String.valueOf(a);
System.out.println(s7+" - String conversion with
valueOf\n");
//To extract single character from String
System.out.println(s2.charAt(3)+" - To extract
single character from String\n");
//Char into bytes
byte s8[]="khushi".getBytes();
for(int i=0;i<s8.length;i++)
{
System.out.print(s8[i]+"\t");
}
System.out.println("- Char into bytes
getbytes\n");
//char array
char s9[]="Pitroda".toCharArray();
System.out.println(s9[0]+" - String to character
array\n");
//String Comparision
System.out.println(s2.equals(s3)+" - String
comparision\n");
System.out.println(s2.equalsIgnoreCase("KhuShi")+"
- String comparision ignore case\n");
System.out.println("Khushi
Pitroda".regionMatches(0,"Khushi",0,6)+" - Region
Mateches\n");
boolean b =
"Khushi".startsWith("Khu");
System.out.println(b+" - Starts with and Ends
with\n");
//compare to
Integer i="happy".compareTo("Happy");
if(i<0)
{
System.out.println("happy is less than
Happy - comparesTo\n");
}
else if(i>0)
{
System.out.println("happy is grater than
Happy - comparesTo\n");
}
else
{
System.out.println("happy is equals to
Happy - comparesTo\n");
}
//searching string
int j = "JJava".lastIndexOf('a');
System.out.println(j+" - lastIndexOf index of a in
JJava\n");
int k = "JJava".indexOf('a');
System.out.println(k+" - indexOf index of a in
JJava\n");
//modifying String
String s10 = "Pitroda Khushi".substring(8);
System.out.println(s10+" - substring\n");
String s11 = s10+" pitroda";
System.out.println(s11+" - concate\n");
String s12 = s11.replace('p','P');
System.out.println(s12+" - replace\n");
String s13 = s12.trim();
System.out.println(s13+" - trim\n");
//changing case
String s14 = s13.toUpperCase();
System.out.println(s14+" - toUpperCase\n");
System.out.println(s14.toLowerCase()+" -
toLowerCase\n");
}
}
OUTPUT:
CODE: (String Buffer)
public class
stringbuffer{
public static void main(String args[]){
String s1=("StringBuuffer");
StringBuffer sb = new StringBuffer(s1);
System.out.println(sb+" - Simple
constructor\n");
//length
System.out.println(sb.length()+" -
Length\n");
//capacity
System.out.println(sb.capacity()+" -
capacity\n");
//ensurecapacity
StringBuffer s2 = new
StringBuffer("khushi");
s2.ensureCapacity(21);
System.out.println(s2.capacity()+" -
"+s2+" - ensurecapacity\n");
//charat
System.out.println(s2.charAt(3)+" -
charAt\n");
//setCharAt
s2.setCharAt(0,'K');
System.out.println(s2+" -
setCharAt\n");
//setlength
s2.setLength(4);
System.out.println(s2+" -
setLength\n");
//delete()
s2.delete(3,6);
System.out.println(s2+" -
delete\n");
//delete char at
s2.deleteCharAt(2);
System.out.println(s2+" -
deleteCharAt\n");
//append
s2.append("hi");
System.out.println(s2+" -
append\n");
//insert
s2.insert(2,"us");
System.out.println(s2+" -
insert\n");
//reverse
System.out.println(s2.reverse()+" -
reverse\n");
s2.append("Happy");
//replace
System.out.println(s2.replace(6,11,"Hello")+"
- replace\n");
//index of
int i=s2.indexOf("h");
System.out.println(i+" -
indexOf\n");
//last index of
System.out.println(s2.lastIndexOf("h")+"
- lastIndexOf\n");
}
}
OUTPUT:
Comments
Post a Comment