1将字符串常量变成一个字符串对象
String s=new String("absubid");
C:\Users\Lenovo\AppData\Local\YNote\data\qqD9E57D755DDD943BA7E376F1DC842FAF\54940feea9804b05a4859ded8dee9651\clipboard.png
2把字符数组转成字符串
char[] arr={'a','s','d'};
String s = new String(arr);
C:\Users\Lenovo\AppData\Local\YNote\data\qqD9E57D755DDD943BA7E376F1DC842FAF\a865a0f90d4048eba60b248c39a0b266\clipboard.png
3.把字符数组一部分元素转换成字符串
String s=new String(arr,2,3);
C:\Users\Lenovo\AppData\Local\YNote\data\qqD9E57D755DDD943BA7E376F1DC842FAF\352ef46560a84f7698669a214d8a0f94\clipboard.png
4.直接赋值
String s="cisdbsid";
C:\Users\Lenovo\AppData\Local\YNote\data\qqD9E57D755DDD943BA7E376F1DC842FAF\4b724562a55b4c499f8917936367cb82\clipboard.png
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