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Legal Studies如何在 Java 中將列表字串轉換為大寫？
我們先建立一個列表字串
List<String> list = Arrays.asList("David", "Tom", "Ken","Yuvraj", "Gayle");現在將上面的列表轉換為大寫
list.stream().map(players -> players.toUpperCase())
要進行顯示，請使用 forEach()
list.stream().map(players -> players.toUpperCase()) .forEach(players -> System.out.print(players + ""));
以下是將列表字串轉換為大寫的示例
示例
import java.util.Arrays;
import java.util.List;
public class Demo {
public static void main(final String[] args) {
List<String> list = Arrays.asList("David", "Tom", "Ken","Yuvraj", "Gayle");
System.out.print("List = "+list);
System.out.print("
Uppercase strings = ");
list.stream().map(players -> players.toUpperCase()) .forEach(players -> System.out.print(players + ""));
}
}輸出
List = [David, Tom, Ken, Yuvraj, Gayle] Uppercase strings = DAVID TOM KEN YUVRAJ GAYLE
更新於：30-Jul-2019
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