String items[] = {"1","2","3","4","5"}; List<String> list1=Arrays.asList(items);//将数组转换为list/* 发现直接: list1.remove("2");会报错: Exception in thread "main" java.lang.UnsupportedOperationException */ 网上找到报错原因: 调用Arrays.asList()生产的List的add、remove方法时报异...
String items[] = {"1","2","3","4","5"}; List<String> list1=Arrays.asList(items);//将数组转换为list/* 发现直接: list1.remove("2");会报错: Exception in thread "main" java.lang.UnsupportedOperationException */ 网上找到报错原因: 调用Arrays.asList()生产的List的add、remove方法时报异...
java之String类 2019-12-24 22:29 −1.java程序中所有字符的字面值都作为string 类的实例实现。,字符串本质是一个字符的数组。 1 //演示字符串 具备final属性,一次赋值,终生不变 2 String str = "oracle";//此时str被定义为变量,“oracle”创建一个字符串对象 ,... ...