point.comMore String Methods in Java
String capacity() Method
The String capacity() method is used to find the total allocated capacity of string.
Syntax:
public int capacity()
Example:
public class Capacity
{
public static void main(String args[])
{
StringBuffer s1=new StringBuffer("onlinetpoint");
System.out.println(s1.capacity());
}
}
String append() Method
The String append() method is used to concatenates str2 at the end of string str1.
Syntax:
public int append()
Example:
public class Append
{
public static void main(String args[])
{
StringBuffer s1=new StringBuffer("onlinetpoint");
s1=s1.append(".com");
System.out.println(s1);
}
}
String insert() Method
The String insert() method is used to insert the string into another string.
Syntax:
StringBuffer insert(int index, String str)
Example:
public class Insert
{
public static void main(String args[])
{
StringBuffer s1=new StringBuffer("onlinetpoint");
s1=s1.insert(12,".com");
System.out.println(s1);
}
}
String delete() Method
The String delete() method is used to delete the characters within a StringBuffer Object.
Syntax:
StringBuffer delete(int startindex, int endindex)
Example:
public class Delete
{
public static void main(String args[])
{
StringBuffer s1=new StringBuffer("onlinetutorialpoint.com");
s1=s1.delete(7,14);
System.out.println(s1);
}
}
String reverse() Method
The String reverse() method is used to reverse the characters within a StringBuffer Object.
Syntax:
StringBuffer reverse()
Example:
public class Reverse
{
public static void main(String args[])
{
StringBuffer s1=new StringBuffer("tnioptenilno");
s1.reverse();
System.out.println(s1);
}
}
String replace() Method
The String replace() method is used to replaces one set of characters into another set of characters within a StringBuffer Object.
Syntax:
StringBuffer replace(int startIndex, int endIndex, String str)
Example:
public class Replace
{
public static void main(String args[])
{
StringBuffer s1=new StringBuffer("onlinetreplace");
s1.replace(7,14,"point.com");
System.out.println(s1);
}
}
String startsWith() & endsWith() Method
The String startsWith() method is used to find whether a given string starts with specified string. The String endsWith() method is used to find whether a given string ends with specified string.
boolean startsWith(String str) boolean endsWith(String str)
Example:
public class Startendwidth
{
public static void main(String args[])
{
String s1="onlinetpoint";
System.out.println(s1.startsWith("point"));
System.out.println(s1.endsWith("point"));
}
}
String join() & trim() Method
The String join() method is used to returns a string joined with given delimiter. The String trim() method is used to remove leading and trailing whitespace.
Syntax:
public String join(CharSequence delimiter, CharSequence... elements) String trim()
Example:
public class Jointrim
{
public static void main(String args[])
{
String s1=" onlinetpoint ";
System.out.println(s1.trim());// remove the whitespace
String s2=String.join(" ","welcome","to","onlinetpoint");
System.out.println(s2);
}
}
String toLowerCase() & trim() Method
The String toLowerCase() method is used to convert the string into the lowercase letter. The String toUpperCase() method is used to convert the string into the uppercase letter.
Syntax:
public String toLowerCase() public String toUpperCase()
Example:
public class Toloweruppercase
{
public static void main(String args[])
{
String s1="onlineTpoint";
System.out.println(s1.toLowerCase());
System.out.println(s1.toUpperCase());
}
}
String substring() & isEmpty() Method
The String substring() method is used to It returns a portion of the String. The String isEmpty() method is used to checks if the given string is empty or not.
Syntax:
public boolean isEmpty() public String substring(int startIndex, int endIndex)
Example:
public class Substringisempty
{
public static void main(String args[])
{
String s1="onlinetpoint";
System.out.println(s1.isEmpty());
System.out.println(s1.substring(7,11));
}
}
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