java.lang.String绫绘槸Java涓渶甯哥敤鐨勭被涔嬩竴锛岀敤浜庤〃绀哄瓧绗︿覆銆備笅闈㈡槸涓€浜涘父瑙佺殑String绫荤殑浣跨敤鏂规硶锛?/p>

1. 鍒涘缓瀛楃涓插璞★細

• 浣跨敤瀛楅潰鍊煎垱寤哄瓧绗︿覆锛歋tring str = 鈥淗ello World!鈥?

• 浣跨敤鏋勯€犲嚱鏁板垱寤哄瓧绗︿覆锛歋tring str = new String(鈥淗ello World!鈥?;

2. 鑾峰彇瀛楃涓茬殑闀垮害锛歩nt length = str.length();

3. 鍒ゆ柇瀛楃涓叉槸鍚︿负绌猴細boolean isEmpty = str.isEmpty();

4. 鑾峰彇鎸囧畾浣嶇疆鐨勫瓧绗︼細char ch = str.charAt(index); // index浠?寮€濮?/p>

5. 鑾峰彇瀛愬瓧绗︿覆锛歋tring subStr = str.substring(startIndex, endIndex); // endIndex涓嶅寘鍚湪鍐?/p>

6. 瀛楃涓叉嫾鎺ワ細

• 浣跨敤"+"杩愮畻绗︽嫾鎺ュ瓧绗︿覆锛歋tring result = str1 + str2;

• 浣跨敤concat()鏂规硶鎷兼帴瀛楃涓诧細String result = str1.concat(str2);

7. 瀛楃涓叉瘮杈冿細

• 浣跨敤equals()鏂规硶姣旇緝瀛楃涓插唴瀹规槸鍚︾浉绛夛細boolean isEqual = str1.equals(str2);

• 浣跨敤equalsIgnoreCase()鏂规硶姣旇緝瀛楃涓插唴瀹规槸鍚︾浉绛夛紙蹇界暐澶у皬鍐欙級锛歜oolean isEqual = str1.equalsIgnoreCase(str2);

8. 瀛楃涓叉煡鎵撅細

• 浣跨敤indexOf()鏂规硶鏌ユ壘鎸囧畾瀛楃鎴栧瓙瀛楃涓茬殑浣嶇疆锛歩nt index = str.indexOf(ch or str);

• 浣跨敤lastIndexOf()鏂规硶鏌ユ壘鎸囧畾瀛楃鎴栧瓙瀛楃涓茬殑鏈€鍚庝竴涓綅缃細int index = str.lastIndexOf(ch or str);

9. 瀛楃涓叉浛鎹細String newStr = str.replace(oldStr, newStr);

10. 瀛楃涓插垎鍓诧細String[] splitArray = str.split(delimiter);

11. 瀛楃涓茶浆鎹负澶у啓鎴栧皬鍐欙細String upperCaseStr = str.toUpperCase(); String lowerCaseStr = str.toLowerCase();

12. 鍘婚櫎瀛楃涓查灏剧殑绌烘牸锛歋tring trimmedStr = str.trim();

13. 鍒ゆ柇瀛楃涓叉槸鍚︿互鎸囧畾鐨勫墠缂€鎴栧悗缂€寮€濮嬫垨缁撴潫锛歜oolean startsWith = str.startsWith(prefix); boolean endsWith = str.endsWith(suffix);

14. 瀛楃涓茶浆鎹负瀛楃鏁扮粍锛歝har[] charArray = str.toCharArray();

15. 瀛楃涓茶浆鎹负瀛楄妭鏁扮粍锛歜yte[] byteArray = str.getBytes();

16. 鏍煎紡鍖栧瓧绗︿覆锛歋tring formattedStr = String.format(format, args);

17. 瀛楃涓茬殑姣旇緝銆佹埅鍙栥€佹浛鎹㈢瓑鎿嶄綔閮戒笉浼氭敼鍙樺師濮嬬殑瀛楃涓诧紝鑰屾槸杩斿洖涓€涓柊鐨勫瓧绗︿覆銆?/p>

鎬讳箣锛孲tring绫绘彁渚涗簡寰堝鏂规硶鏉ユ搷浣滃瓧绗︿覆锛屽彲浠ユ牴鎹渶瑕侀€夋嫨閫傚悎鐨勬柟娉曟潵澶勭悊瀛楃涓层€?/p>