- StringBuilder append(boolean a) :The java.lang.StringBuilder.append(boolean a) is an inbuilt method in Java which is used to append the string representation of the boolean argument to a given sequence.
Syntax :
public StringBuilder append(boolean a)
Parameter: This method accepts a single parameter a of boolean type and refers to the Boolean value to be appended.
Return Value: The method returns a reference to this object.
Examples:
Input:
string_buffer = "We are Indians"
boolean a = true
Output: We are Indians true
Below program illustrates the java.lang.StringBuilder.append() method:
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sb1 = new
StringBuilder("Welcome to Geeksforgeeks ");
System.out.println("Input: " + sb1);
sb1.append(true);
System.out.println("Output: " + sb1);
System.out.println();
StringBuilder sb2 = new StringBuilder("We fail- ");
System.out.println("Input: " + sb2);
sb2.append(false);
System.out.println("Output: " + sb2);
}
}
|
Output:
Input: Welcome to Geeksforgeeks
Output: Welcome to Geeksforgeeks true
Input: We fail-
Output: We fail- false
- java.lang.StringBuilder.append(char a): This is an inbuilt method in Java which is used to append the string representation of the char argument to the given sequence. The char argument is appended to the contents of this StringBuilder sequence.
Syntax :
public StringBuilder append(char a)
Parameter: The method accepts a single parameter a which is the Char value whose string representation is to be appended.
Return Value: The method returns a string object after the append operation is performed.
Examples :
Input :
StringBuilder = I love my Country
char a = A
Output: I love my Country A
Below programs illustrate the java.lang.StringBuilder.append(char a) method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sbf = new
StringBuilder("Welcome geeks!");
System.out.println( sbf);
sbf.append('T');
System.out.println("Result after"+
" appending = " + sbf);
sbf = new StringBuilder("hello world-");
System.out.println(sbf);
sbf.append('#');
System.out.println("Result after appending = "
+ sbf);
}
}
|
Output:
Welcome geeks!
Result after appending = Welcome geeks!T
hello world-
Result after appending = hello world-#
- StringBuilder append(char[] astr): The java.lang.StringBuilder.append(char[] astr) is the inbuilt method which appends the string representation of the char array argument to this StringBuilder sequence.
Syntax :
public StringBuilder append(char[] astr)
Parameter: The method accepts a single parameter astr which are the Char sequence whose string representation is to be appended.
Return Value: The method returns a string object after the append operation is performed.
Examples:
Input :
StringBuffer = I love my Country
char[] astr = 'I', 'N', 'D', 'I', 'A'
Output: I love my Country INDIA
Below program illustrates the java.lang.StringBuilder.append(char[] astr) method:
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sbf = new
StringBuilder("We are geeks ");
System.out.println(sbf);
char[] astr = new char[]
{ 'G', 'E', 'E', 'k', 'S' };
sbf.append(astr);
System.out.println("Result after"+
" appending = " + sbf);
sbf = new StringBuilder("We are -");
System.out.println(sbf);
astr = new char[] { 'a', 'b', 'c', 'd' };
sbf.append(astr);
System.out.println("Result after appending = " + sbf);
}
}
|
Output:
We are geeks
Result after appending = We are geeks GEEkS
We are -
Result after appending = We are -abcd
- StringBuilder append(char[] cstr, int iset, int ilength) : This method appends the string representation of a subarray of the char array argument to this sequence. The Characters of the char array cstr, starting at index iset, are appended, in order, to the contents of this sequence. The length of this sequence increases by the value of ilength.
Syntax :
public StringBuilder append(char[] cstr, int iset, int ilength)
Parameter : This method accepts three parameters:
- cstr – This refers to the Char sequence.
- iset – This refers to the index of the first char to append.
- ilength – This refers to the number of chars to append.
Return Value: The method returns a string object after the append operation is performed.
Below program illustrates the java.lang.StringBuilder.append(char[] cstr, int iset, int ilength) method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sb = new
StringBuilder("Geeks");
System.out.println("String Builder "+
"before = " + sb);
char[] cstr = new char[]
{ 'f', 'o', 'r', 'G', 'e', 'e', 'k', 's','q','q' };
sb.append(cstr, 0, 8);
System.out.println("After appending String Builder = " + sb);
}
}
|
Output:
String Builder before = Geeks
After appending String Builder = GeeksforGeeks
- StringBuilder append(double a): This method simply appends the string representation of the double argument to this StringBuilder sequence.
Syntax :
public StringBuilder append(double val)
Parameter: The method accepts a single parameter val which refers to the decimal value whose string representation is to be appended.
Return Value: The method returns a string object after the append operation is performed.
Examples :
Input :
StringBuffer = my Country
Double a = 54.82
Output: my Country 54.82
Below program illustrates the java.lang.StringBuilder.append(double val) method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
System.out.println("We are geeks and its really ");
StringBuilder sbf = new
StringBuilder("We are geeks and its ");
Double astr = new Double(36.47);
sbf.append(astr);
System.out.println("Result after appending = " + sbf);
System.out.println("We are lost -");
sbf = new StringBuilder("We are lost -");
astr = new Double(27.38);
sbf.append(astr);
System.out.println("Result after appending = " + sbf);
}
}
|
Output:
We are geeks and its really
Result after appending = We are geeks and its 36.47
We are lost -
Result after appending = We are lost -27.38
- StringBuilder append(float val): This method appends the string representation of the float argument to this sequence.
Syntax :
public StringBuilder append(float val)
Parameter: The method accepts a single parameter val which is the float value whose string representation is to be appended.
Return Value: StringBuilder.append(float val) method returns a reference the string object after the operation is performed.
Examples :
Input :
StringBuilder = I love my Country
float a = 5.2
Output: I love my Country 5.2
Below program illustrates the java.lang.StringBuilder.append() method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
System.out.println("We are geeks and its really ");
StringBuilder sbf = new
StringBuilder("We are geeks and its ");
Float astr = new Float(6.47);
sbf.append(astr);
System.out.println("Result after appending = "+sbf);
System.out.println("We are lost -");
sbf = new StringBuilder("We are lost -");
astr = new Float(27.38);
sbf.append(astr);
System.out.println("Result after appending = "+sbf);
}
}
|
Output:
We are geeks and its really
Result after appending = We are geeks and its 6.47
We are lost -
Result after appending = We are lost -27.38
- StringBuilder append(int val) This method simply appends the string representation of the int argument to this StringBuilder sequence.
Syntax :public StringBuilder append(int val)
Parameter: The method accepts a single parameter val which is an integer value on which the operation is supposed to be performed.
Return Value: The method returns a reference to this object.
Examples :
Input :
StringBuilder = I love my Country
int a = 55
Output: I love my Country 55
Below program illustrates the java.lang.StringBuilder.append() method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
System.out.println("We are geeks and its really ");
StringBuilder sbf = new
StringBuilder("We are geeks and its ");
Integer astr = new Integer(827);
sbf.append(astr);
System.out.println("Result after appending = "+sbf);
System.out.println("We are lost -");
sbf = new StringBuilder("We are lost -");
astr = new Integer(515);
sbf.append(astr);
System.out.println("Result after appending = "+sbf);
}
}
|
Output:
We are geeks and its really
Result after appending = We are geeks and its 827
We are lost -
Result after appending = We are lost -515
- StringBuilder append(Long val) : This method simply appends the string representation of the long argument to this StringBuilder sequence.
Syntax :
public StringBuilder append(Long val)
Parameter: The method accepts a single parameter val which is the long value.
Return Value: The method returns a string object after the append operation is performed.
Examples :
Input :
StringBuilder = I love my Country
Long a = 591995
Output: I love my Country 591995
Below program illustrates the java.lang.StringBuilder.append() method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
System.out.println("We are geeks and its really ");
StringBuilder sbf = new
StringBuilder("We are geeks and its ");
Long astr = new Long(827);
sbf.append(astr);
System.out.println("Result after appending = "+sbf);
System.out.println("We are lost -");
sbf = new StringBuilder("We are lost -");
astr = new Long(515);
sbf.append(astr);
System.out.println("Result after appending = "+sbf);
}
}
|
Output:
We are geeks and its really
Result after appending = We are geeks and its 827
We are lost -
Result after appending = We are lost -515
- StringBuilder append(CharSequence a): This method is used to append the specified CharSequence to this sequence.
Syntax :
public StringBuilder append(CharSequence a)
Parameter: The method accepts a single parameter a which is the CharSequence value.
Return Value: The method returns a string object after the append operation is performed.
Examples :
Input :
StringBuilder = "I love my Country"
CharSequence a = " India"
Output : I love my Country India
Below program illustrates the java.lang.StringBuilder.append() method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sbf = new StringBuilder("Geeksfor");
System.out.println("String Builder = " + sbf);
CharSequence chSeq = "geeks";
sbf.append(chSeq);
System.out.println("After append = " + sbf);
}
}
|
Output:
String Builder = Geeksfor
After append = Geeksforgeeks
- StringBuilder append(CharSequence chseq, int start, int end) : This method is used to append a subsequence of the specified CharSequence to this StringBuilder.
Syntax :
StringBuilder append(CharSequence chseq, int start, int end)
Parameter : The method accepts three parameters:
- chseq(CharSequence): This refers to the CharSequence value.
- start(Integer): This refers to the starting index of the subsequence to be appended..
- end(Integer): This refers to the end index of the subsequence to be appended.
Return Value : The method returns the string after the append operation is performed.
Examples :
Input :
StringBuilder = Geeksforgeeks
CharSequence chseq = abcd1234
int start = 2
int end = 7
Output :Geeksforgeekscd123
Below program illustrates the java.lang.StringBuilder.append() method:
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sbf = new
StringBuilder("We are the ");
System.out.println("String builder= "
+ sbf);
CharSequence chSeq = "wegeekss";
sbf.append(chSeq, 2, 7);
System.out.println("After append string"+
" buffer = " + sbf);
}
}
|
Output:
String builder= We are the
After append string buffer = We are the geeks
- StringBuilder append(Object obj) : This method is used to append the string representation of the Object argument to the StringBuilder.
Syntax :
StringBuilder append(Object obj)
Parameter: The method accepts a single parameter obj which refers to the object needed to be appended.
Return Value: The method returns the string after performing the append operation.
Below program illustrates the java.lang.StringBuilder.append() method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sbf = new StringBuilder("Geeksfor");
System.out.println("String Builder = " + sbf);
Object objectvalue = "geeks";
sbf.append(objectvalue);
System.out.println("After appending result is = "+sbf);
}
}
|
Output:
String Builder = Geeksfor
After appending result is = Geeksforgeeks
- StringBuilder append(String istr) : This method is used to append the specified string to this StringBuilder.
Syntax :StringBuilder append(String istr)
Parameter: The method accepts a single parameter istr of String type which refer to the value to be appended.
Return Value : The method returns a specified string to this character sequence.
Below program illustrates the java.lang.StringBuilder.append() method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sbf = new StringBuilder("Geeksfor");
System.out.println("String Builder = " + sbf);
String strvalue = "geeks";
sbf.append(strvalue);
System.out.println("After appending result is = "+sbf);
}
}
|
Output:
String Builder = Geeksfor
After appending result is = Geeksforgeeks
- StringBuilder append(StringBuilder sbf) : This method is used to append the specified StringBuilder to this sequence or StringBuilder.
Syntax:
public StringBuilder append(StringBuilder sbf)
Parameter: The method accepts a single parameter sbf refers to the StringBuilder to append.
Return Value : The method returns StringBuilder to this sequence.
Below program illustrates the java.lang.StringBuilder.append() method.
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
StringBuilder sbf1 = new StringBuilder("Geeks");
System.out.println("String Builder 1 = " + sbf1);
StringBuilder sbf2 = new StringBuilder("forgeeks ");
System.out.println("String Builder 2 = " + sbf2);
sbf1.append(sbf2);
System.out.println("After appending the result is = "+sbf1);
}
}
|
Output:
String Builder 1 = Geeks
String Builder 2 = forgeeks
After appending the result is = Geeksforgeeks