Syntax error, parameterized types are only available if source level is 1.5 or greater [Java]

Solution - Parameterized types are only available if source level is 1.5
Solution - Parameterized types are only available if source level is 1.5

If you are using Java in Eclipse IDE and see this error in your Class using parameterized collections, then that's because your installed Java JDK is either below 1.4 or your compilation Java version is below 1.5


  1. Go to Eclipse,
  2. Go to Menu: Windows -> Preferences (Elcipse -> Preferences if using macOS),
  3. Now expand Java -> Compiler -> Compliler compliment level: Select Java 1.5 or higher.
  4. Click Apply and Close,
  5. Clean & Build your Project again the error should go.

⛏️ It may be so that you have set the compilation setting at your project level, in such a case you need to Right-click on your Project folder and follow the same steps under Properties.

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