Commonly Used Java Classes

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Calendar Examples

  • Add or substract days to current date using Java Calendar
  • Add or substract hours to current time using Java Calendar
  • Add or substract minutes to current time using Java Calendar
  • Add or substract months to current date using Java Calendar
  • Add or substract seconds to current time using Java Calendar
  • Add or substract weeks to current date using Java Calendar
  • Add or substract years to current date using Java Calendar
  • Compare date time using after method of Java Calendar
  • Compare date time using before method of Java Calendar
  • Display Day of Week using Java Calendar
  • Display Month of year using Java Calendar
  • Get Week of month and year using Java Calendar
  • Get current TimeZone using Java Calendar
  • Get current date time values using Java Calendar
  • Get time in milliseconds using Java Calendar
  • Simple Java Calendar Example



Java Date Class Examples

  • Compare two Java Date objects using after method example
  • Compare two Java Date objects using before method example
  • Compare two Java Date objects using compareTo method example
  • Convert Date into milliseconds example
  • Create java Date from specific time example
  • Simple Java Date Example



Java Date Formatting Examples



  • Add AM PM to time using SimpleDateFormat
  • Convert date string from one format to another format using SimpleDateFormat
  • Formatting Minutes using SimpleDateFormat
  • Formatting TimeZone using SimpleDateFormat
  • Formatting date in custom formats using SimpleDateFormat
  • Formatting date in default formats using DateFormat
  • Formatting day of week using SimpleDateFormat
  • Formatting day using SimpleDateFormat
  • Formatting hour using SimpleDateFormat
  • Formatting month using SimpleDateFormat
  • Formatting seconds using SimpleDateFormat
  • Formatting year using SimpleDateFormat
  • Java SimpleDateFormat Class Example
  • Parsing custom formatted date string into Date object using SimpleDateFormat



Java String Examples


  • Check if string contains valid number example
  • Convert String to Character Array Example
  • Java ArrayList to String Array Example
  • Java Char Array To String Example
  • Java Convert int Array To String Example
  • Java Date to String Example
  • Java InputStream to String Example
  • Java Reverse String Array Example
  • Java Search String using indexOf Example
  • Java Sort String Array Example
  • Java Stacktrace to String Example
  • Java String Array Contains Example
  • Java String Array Example
  • Java String Array Length Example
  • Java String Array To List Example
  • Java String Array to String Example
  • Java String Compare Example
  • Java String Concat Example
  • Java String Contains example
  • Java String Length Example
  • Java String Replace Example
  • Java String Reverse Example
  • Java String Split Example
  • Java String Trim Example
  • Java String endsWith Example
  • Java String isEmpty Example
  • Java String startsWith Example
  • Java String to ArrayList Example
  • Java String to Date Example
  • Java String to InputStream Example
  • Java String to Lower Case example
  • Java String to String Array Example
  • Java String to byte Array Example
  • Java String to java.sql.Date Example
  • Java String valueOf Example
  • Simple String Example
  • String toUpperCase example
  • Substring Example



Java StringBuffer Examples
  • Java StringBuffer Example
  • Java StringBuffer Replace Example
  • Java StringBuffer Reverse Example
  • Java StringBuffer SubString Example
  • Java StringBuffer append method Example
  • Java StringBuffer append new line example
  • Java StringBuffer delete remove character or clear content Example
  • Java StringBuffer insert method Example
  • Java StringBuffer length Example
  • Java StringBuffer setLength Example
  • Java StringBuffer to InputStream Example
  • StringBuffer Reset Java Example
  • StringBuffer To File Java Example
  • StringBuffer To byte Array Java Example
  • StringBuffer Trim Java Example
  • StringBuffer toString Java Example



String Tokenizer Examples

  • Java StringTokenizer - Return Delimiters as Tokens example
  • Java StringTokenizer - Specify Delimiter example
  • Java StringTokenizer count tokens example
  • Java StringTokenizer example
  • Java StringTokenizer return tokens as Objects example
  • Parse CSV File using StringTokenizer example
  • Reverse string by word using StringTokenizer example