CODEWITHSUNDEEP
javagwtmaven
Nikitin Mikhail
Nikitin Mikhail

Reputation: 3019

generics are not supported in -source 1.3

I have a problem while maven packaging. In this code:

public class LoginDialog extends Dialog {

    private final TextField<String> customer;
                          ^here
    private final TextField<String> login1;
    private final TextField<String> password1;
    private final MainController controller= new MainController();
    private String customerId;
    private String login;
    private String password;

I have an error like:

[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure
...src/main/java/com/messagedna/web/client/widget/LoginDialog.java:[19,27] error: generics are not supported in -source 1.3

what may be the reason of this?

Upvotes: 3

Views: 12484

Answers (7)

S.P.
S.P.

Reputation: 151

If you are not using maven and facing similar issue in Intellij editor, probably worth to check Project Settings. Even if you define Proper JDK, change the "Project language level" and can configure 5 onward.

Upvotes: 0

Shyam Kumar
Shyam Kumar

Reputation: 919

Android studio: It fixes by adding these below lines in the file app build.gradle

compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 }

Note: use the latest java version, here I'm using java 8

Upvotes: 1

brent777
brent777

Reputation: 3379

Generics were only introduced as a feature in Java 5, so when compiling using 3, generics will not be permitted. If you want more info about generics, look here. So you need to either compile using 5 or later or stop using generics.

Upvotes: 0

Matt Coarr
Matt Coarr

Reputation: 935

You need to tell the maven compiler plugin that your code is using a recent java version. For instance, if you are using java 7, to the following:

<plugins>
   <plugin>
     <groupId>org.apache.maven.plugins</groupId>
     <artifactId>maven-compiler-plugin</artifactId>
     <configuration>
       <source>1.7</source>
       <target>1.7</target>
     </configuration>
   </plugin>
</plugins>

Upvotes: 3

Boris the Spider
Boris the Spider

Reputation: 61148

Generics were added in java 1.5. Your maven is compiling for java 1.3.

This can be fixed in one of two ways.

Remove generics so that you can compile for < 1.5

Change the maven configuration to compile for a newer version of java. You should be able to edit your compiler plugin in your pom:

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.0</version>
            <configuration>
                <source>1.5</source>
                <target>1.5</target>
            </configuration>
        </plugin>

This tells maven to compile for 1.5

Upvotes: 9

NPE
NPE

Reputation: 500357

When you compile your code with -source 1.3, the compiler does not support assertions, generics, or other language features introduced after JDK 1.3.

Upvotes: 1

Uncle Iroh
Uncle Iroh

Reputation: 6045

You either need to change your settings so that you're source is set to 1.5+ or remove the generics from your code:

private final TextField customer;

Upvotes: 0

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