append(): This method is available in java.lang.StringBuilder class of Java.
Syntax:
StringBuilder java.lang.StringBuilder.append(Object obj)
This method takes one argument of type Object (like int, boolean, long, etc). This method appends the string representation of the Object argument. The overall effect is exactly as if the argument were converted to a string, and the characters of that string were then appended to this character sequence.
Parameters: One parameter is required for this method.
obj: an Object.
Returns: a reference to this object.
Approach
Java
public class AppendStringBuilder {public static void main(String[] args) {StringBuilder str = new StringBuilder();// append the boolean valuestr.append(false);System.out.println("After boolean = " + str);// append the char valuestr.append('a');System.out.println("After char = " + str);//// append the char arraychar arr[] = { 'a', 'b' };str.append(arr);System.out.println("After char array = " + str);// append the CharSequence valueCharSequence s = "abc";str.append(s);System.out.println("After CharSequence = " + str);// append the double valuedouble d = 16.78;str.append(d);System.out.println("After double = " + str);// append the float valuefloat f = 12.34f;str.append(f);System.out.println("After float = " + str);// append the int valueint i = 5;str.append(i);System.out.println("After int = " + str);// append the long valuelong lng = 1999191;str.append(lng);System.out.println("After long = " + str);// append the String valueString str1 = "Hello";str.append(str1);System.out.println("After String = " + str);// append the StringBuffer valueStringBuffer sb = new StringBuffer("World");str.append(sb);System.out.println("After StringBuffer = " + str);}}
Output:
After boolean = false After char = falsea After char array = falseaab After CharSequence = falseaababc After double = falseaababc16.78 After float = falseaababc16.7812.34 After int = falseaababc16.7812.345 After long = falseaababc16.7812.3451999191 After String = falseaababc16.7812.3451999191Hello After StringBuffer = falseaababc16.7812.3451999191HelloWorld
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