Functions

List of Functions in Java and their use:

charAt(int index)

Returns the character at the specified index.

compareTo(Object o)

Compares this String to another Object

compareTo(String anotherString)

Compares two strings lexicographically.


compareToIgnoreCase(String str)

Compares two strings lexicographically ignoring case considerations.

concat(String str)

Concatenates the specified string to the end of this string

copyValueOf(char[] data, int offset, int count)

Returns a String that is equivalent to the specified character array.


copyValueOf(char[] data)

Returns a String that is equivalent to the specified character array.

endsWith(String suffix)

Tests if this string ends with the specified suffix.

equals(Object anObject)

Compares this string to the specified object.


equalsIgnoreCase(String anotherString)

Compares this String to another object.

getBytes()

Convert this String into bytes according to the platform's default character encoding, storing the result into a new byte array.

getBytes(int srcBegin, int srcEnd, byte[] dst, int dstBegin)

Deprecated. This method does not properly convert characters into bytes

getBytes(String enc)

Convert this String into bytes according to the specified character encoding, storing the result into a new byte array.

getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin)

Copies characters from this string into the destination character array.


hashCode()

Returns a hashcode for this string


hasNext()

finds whether there is any value next in the list.


indexOf(int ch, int fromIndex)

Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index

indexOf(int ch)

Returns the index within this string of the first occurrence of the specified character.

indexOf(String str, int fromIndex)

Returns the index within this string of the first occurrence of the specified substring, starting at the specified index

indexOf(String str)

Returns the index within this string of the first occurrence of the specified substring

intern()

Returns a canonical representation for the string object.

lastIndexOf(int ch, int fromIndex)

Returns the index within this string of the last occurrence of the specified character, searching backward starting at the specified index


lastIndexOf(int ch)

Returns the index within this string of the last occurrence of the specified character.

lastIndexOf(String str, int fromIndex)

Returns the index within this string of the last occurrence of the specified substring.

lastIndexOf(String str)

Returns the index within this string of the rightmost occurrence of the specified substring

length()

Returns the length of this string.

regionMatches(boolean ignoreCase, int toffset, String other, int ooffset, int len)

Tests if two string regions are equal

regionMatches(int toffset, String other, int ooffset, int len)

Tests if two string regions are equal.

replace(char oldChar, char newChar)

Returns a new string resulting from replacing all occurrences of oldChar in this string with newChar.

startsWith(String prefix, int toffset)

Tests if this string starts with the specified prefix.

startsWith(String prefix)

Tests if this string starts with the specified prefix

substring(int beginIndex, int endIndex)

Returns a new string that is a substring of this string

substring(int beginIndex)

Returns a new string that is a substring of this string

toCharArray()

Converts this string to a new character array.

toLowerCase()

Converts all of the characters in this String to lower case using the rules of the default locale, which is returned by Locale.getDefault.

toString()

This object (which is already a string!)

toUpperCase()

Converts all of the characters in this String to upper case using the rules of the default locale, which is returned by Locale.getDefault

trim()

Removes white space from both ends of this string

valueOf(boolean b)

Returns the string representation of the boolean argument.

valueOf(boolean b)

Returns the string representation of the boolean argument.

valueOf(char[] data, int offset, int count)

Returns the string representation of a specific subarray of the char array argument

valueOf(char[] data)

Returns the string representation of the char array argument

valueOf(double d)

Returns the string representation of the double argument.

valueOf(float f)

Returns the string representation of the float argument

valueOf(int i)

Returns the string representation of the int argument.

valueOf(long l)

Returns the string representation of the long argument.

valueOf(Object obj)

Returns the string representation of the Object argument.

abs() -Returns absolute value

round() -It rounds the value to nearest integer

min() – Returns minimum value between two numbers

max()-Returns maximum value between two numbers

random() – Generates a random number

isLetter() – Checks weather the value is Alfa byte or not?

isDigit() -Checks weather the value is Number or not?

isUpperCase() – Checks weather the value is Upper case or not?

isLowerCase()-Checks weather the value is Lower case or not?

contains() – Checks if the Array contains certain value or not?