If you want to download Java 64-bit or 32-bit on your Windows 11 or Windows 10 computer then follow the method mentioned here.

Want to install Java in Windows 11? We have the most straightforward way for it, and you will be able to install Java in only a few minutes.

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If you have a Java application and are wondering how you can run it, here's how to compile and run Java from the command prompt in Windows.

3.7.16 java.lang.NullPointerException: Cannot invoke "String.indexOf(String)" because "s" is null at VASSAL.build.module.metadata.MetaDataFactory.buildMetaData ...

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As enterprises reevaluate their Java strategy and migrate away from Oracle Java, many are turning to OpenJDK distributions.

除了contains方法外，还可以使用String的indexOf方法来判断字符串中是否包含指定词组。 该方法返回指定词组在字符串中首次出现的位置索引，如果返回-1，则表示字符串中不包含该词组。