On the right, Compatible JREs, if there is no old-version Java 7 JRE: On the left, Execution Enviornments: Select J2SE-1.7 Navigate the preferences tree to Java/Installed JREs/Execution Environments If you don't have one yet, then install one (OpenJDK or Oracle). (Note: localespi/localespi-tests may use a different Java version from ICU4J proper.)Ĭheck if you already have an older JRE or a JDK for the minimum version required for ICU4J.Ī JRE (runtime environment, no compiler) is sufficient. If you don't do the following, you run the risk of calling Java library APIs that are newer than ICU4J's Java version, and you cause runtime exceptions for people who use the older version.Ĭurrently (as of 2018-aug / ICU 63), ICU4J is on Java 7 (and Eclipse 4.6 requires Java 8). Eclipse typically requires a newer Java version than what we can depend on for ICU4J.
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