Java-21 features

Index

1. Language feauteres
   • String Template
   • record pattern
   • pattern matching for switch
2. Libraries improvement
   • Virtual threads
   • Sequenced collections
3. Performace improvement
   • ZGC

String Template[Preview]

Index

1. Why Introduced
2. syntax
   • Usage Example

There are three components to a template expression:

1. A processor
   • STR Template Processor
2. A template which contains the data with the embedded expressions
   • e,g, “\{var_name}“
3. A dot (.) character

String interpolationUsingSTRProcessor(String feelsLike, String temperature, String unit) {
    return STR
      . "Today's weather is \{ feelsLike }, with a temperature of \{ temperature } degrees \{ unit }" ;
}

Record pattern

Index

1. Why Introduced
2. syntax
   • Usage Example

Pattern matching for switch

Index

1. Why Introduced
2. syntax
   • Usage Example

Virtual threads

Index

1. Why Introduced
2. syntax
   • Usage Example

Sequenced collections

Index

1. Why Introduced
2. syntax
   • Usage Example