学习目标 1. 掌握 Java 数组的概念 2. 学会一维数组和二维数组的使用；认识 Arrays 类，掌握操 作数组相关方法 3. 掌握 Java 字符串的概念，字符串与数组的关系；学会 String 类常用字符串操作方法 大纲 数组的概念 一维数组 二维数组 字符串 大纲 数组的概念 一维数组 二维数组 字符串 大纲 数组的概念 一维数组 二维数组 字符串 接下来… 数组的概念 ▶ 字符串是用一对双引号括起来的字符序列。Java 语言中， 字符串常量或变量均用类实现。 ▶ String 对象是不可变的。String 类每一个看起来会修改 String 值的方法，实际上都创建了一个新的对象，以包含修 改后的字符串内容。 1 String s = new String("hello java"); 2 s.toUpperCase(); 3 System.out.println(s); println(s); 大纲 数组的概念 一维数组 二维数组 字符串 理解 Java 字符串 CODE ± String.java Part 1 1 public final class String 2 implements java.io.Serializable, Comparable<String>, CharSequence { //1 3 /** The value is used for

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example All translations is still available. Alternatively you can use the search field to find a specific string or term. 建议 注解 Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example All translations is still available. Alternatively you can use the search field to find a specific string or term. 建议 注解 Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example All translations is still available. Alternatively you can use the search field to find a specific string or term. 建议 注解 Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example All translations is still available. Alternatively you can use the search field to find a specific string or term. 1.3.3 建议 注解: Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example All translations is still available. Alternatively you can use the search field to find a specific string or term. 1.3.3 建议 注解: Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example All translations is still available. Alternatively you can use the search field to find a specific string or term. 1.3.3 建议 注解: Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example error, All strings is still available. Alternatively you can use the search field to find a specific string or term. 建议 注解 Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example error, All strings is still available. Alternatively you can use the search field to find a specific string or term. 1.3.3 建议 注解: Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that

languages. The component corresponds to one translatable file (for example GNU gettext or Android string resources). The projects are there to help you organize component into logical sets (for example error, All strings is still available. Alternatively you can use the search field to find a specific string or term. 建议 注解 Actual permissions might vary depending on your Weblate configuration. Anonymous two scopes - source string or translation. Choose the one which matches the topic you want to discuss. The source string comments are good for providing feedback on the original string, for example that