馃 鍒氬Java鐨勪綘锛屾槸涓嶆槸涔熻杩欎釜"鍦板潃鎬?鏁存嚨浜嗭紵

"涓哄暐鎴戝啓鐨?code>System.out.println(arr)鎵撳嚭鏉ョ殑鏄?code>[I@6d03e736杩欑鐏槦鏂囷紵"鈥斺€旇繖澶ф鏄瘡涓狫ava灏忕櫧蹇呯粡鐨勫洶鎯戞椂鍒汇€傚埆鎱岋紒浠婂ぉ鍜变滑灏辨潵鎵嬫挄杩欎釜"鍦板潃鎬?锛屾暀浣犱笁鎷涜瀹冧箹涔栫幇鍑哄師褰紒

馃幆 鎷涘紡涓€锛氭渶鍘熷浣嗘渶绠＄敤鐨勩€愬惊鐜ぇ娉曘€?/h2>

鈥?strong>鈥嬮€傜敤浜虹兢鈥?/strong>鈥嬶細鎯崇湅娓呮暟缁勯噷姣忎竴涓暟瀛?瀛楃鐨勭粏鑺傛帶
鈥?strong>鈥嬫牳蹇冨彛璇€鈥?/strong>鈥嬶細瑙佷竴涓墦涓€涓紝缁濅笉婕忕綉

java澶嶅埗
int[] scores = {95, 88, 92};
System.out.print("鎴戠殑鑰冭瘯鎴愮哗锛?);
for(int i=0; i"鍒?"); 
}
// 杈撳嚭锛氭垜鐨勮€冭瘯鎴愮哗锛?5鍒?88鍒?92鍒?

鈥?strong>鈥嬸煉?浣犲彲鑳戒細闂€?/strong>鈥嬶細
Q锛氫负鍟ユ湁鏃跺€欒緭鍑轰細鏈夊浣欑殑閫楀彿锛?br/> A锛氬晩鍝堬紒杩欏氨鏄惊鐜殑鍧戔€斺€斿緱鑷繁澶勭悊鏈€鍚庝竴涓厓绱犵殑鍒嗛殧绗︺€傛暀浣犱滑涓粷娲伙細

java澶嶅埗
StringBuilder sb = new StringBuilder();
for(int num : scores) {
    sb.append(num).append(" | ");
}
System.out.println(sb.substring(0, sb.length()-3)); // 鍘绘帀鏈€鍚庣殑" | "

鈥?strong>鈥嬸煔€ 涓汉琛€娉彶鈥?/strong>鈥嬶細
褰撳勾鍋氬鐢熺鐞嗙郴缁燂紝鐢ㄥ惊鐜緭鍑烘垚缁╁崟鏃讹紝灏卞洜涓烘病澶勭悊濂界┖鏍硷紝鎶?90 80"鎵撳嵃鎴?9080"锛岃鑰佸笀褰撲紬澶勫垜...鎵€浠ュ崈涓囪妫€鏌ユ牸寮忓晩锛?/p>

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鉁?鎷涘紡浜岋細鎳掍汉蹇呭鐨勩€愰瓟娉曞拻璇€慉rrays.toString()

鈥?strong>鈥嬮€傜敤浜虹兢鈥?/strong>鈥嬶細鎯充笁绉掓悶瀹氳緭鍑虹殑鏁堢巼鐙傞瓟
鈥?strong>鈥嬮殣钘忔妧宸р€?/strong>鈥嬶細鍦╥mport鍖哄煙鍔犱笂java.util.Arrays

java澶嶅埗
String[] fruits = {"鑻规灉", "棣欒晧", "鑺掓灉"};
System.out.println("浠婂ぉ鐗逛环姘存灉锛? + Arrays.toString(fruits));
// 杈撳嚭锛氫粖澶╃壒浠锋按鏋滐細[鑻规灉, 棣欒晧, 鑺掓灉]

鈥?strong>鈥嬧殸锔?娉ㄦ剰璀︽姤鈥?/strong>鈥嬶細

1. 閬囧埌浜岀淮鏁扮粍浼氱炕杞︼紒

java澶嶅埗
int[][] matrix = {{1,2}, {3,4}};
System.out.println(Arrays.toString(matrix)); 
// 杈撳嚭锛歔[I@7852e922, [I@4e25154f] 锛堣繕鏄湴鍧€锛侊級

1. 鈥?strong>鈥嬫纭Э鍔库€?/strong>鈥嬫崲鎴?code>deepToString()锛?/li>

java澶嶅埗
System.out.println(Arrays.deepToString(matrix)); 
// 杈撳嚭锛歔[1, 2], [3, 4]]

鈥?strong>鈥嬸煍?鍐风煡璇嗏€?/strong>鈥嬶細
JDK寮€鍙戣€呭伔鍋峰湪Arrays绫婚噷钘忎簡150+涓伐鍏锋柟娉曪紝鍏朵腑toString()姣忓勾瑕佽鍏ㄧ悆Javaer璋冪敤瓒呰繃1浜挎锛佽繖鏁版嵁鏄垜鍦∣racle鎶€鏈鍧涗笂鎵掑埌鐨勶綖

馃洜锔?鎷涘紡涓夛細楂樻墜閮藉湪鐢ㄧ殑銆愯嚜瀹氫箟缁濇嫑銆?/h2>

鈥?strong>鈥嬮€傜敤浜虹兢鈥?/strong>鈥嬶細瑕佽X涔熻瀹炵敤鐨勫畬缇庝富涔夎€?br/> 鈥?strong>鈥嬫牳蹇冭澶団€?/strong>鈥嬶細StringBuilder + 鏍煎紡鎺у埗

java澶嶅埗
public static String 閰风偒杈撳嚭(int[] arr) {
    if(arr == null) return "杩欐槸涓┖鏁扮粍鍟婁翰锛?;
    StringBuilder sb = new StringBuilder("鉁?");
    for(int i=0; i"绗?).append(i+1).append("涓槸鈫?).append(arr[i]);
        if(i != arr.length-1) sb.append("\n"); // 鎹㈣姣旈€楀彿浼橀泤澶氫簡
    }
    return sb.toString();
}
// 璋冪敤杈撳嚭锛氣湪 绗?涓槸鈫?5
//         绗?涓槸鈫?8
//         绗?涓槸鈫?2

鈥?strong>鈥嬸煄?瀵规瘮瀹為獙鈥?/strong>鈥嬶細

鏂规硶	浠ｇ爜閲?/th>	鍙鎬?/th>	瑁匵鎸囨暟	閫傚悎鍦烘櫙
寰幆澶ф硶	5琛?/td>	鈽呪槄鈽?/td>	鈽呪槅鈽?/td>	鏁欏婕旂ず/绠€鍗曡皟璇?/td>
Arrays.toString()	1琛?/td>	鈽呪槄鈽?/td>	鈽呪槄鈽?/td>	蹇€熼獙璇佹暟鎹?/td>
鑷畾涔夋柟娉?/td>	10+琛?/td>	鈽呪槄鈽?/td>	鈽呪槄鈽?/td>	鍟嗕笟椤圭洰/灞曠ず鏁堟灉

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馃挰 鐙瑙佽В鏃堕棿

鏈€杩戝湪鐮旂┒JDK婧愮爜鏃跺彂鐜颁釜褰╄泲锛氫粠Java 8寮€濮嬶紝Arrays.toString()搴曞眰鍏跺疄鍋峰伔鐢ㄤ簡骞惰澶勭悊锛佽櫧鐒跺挶浠倝鐪肩湅涓嶅嚭鏉ワ紝浣嗗疄娴嬪鐞?0涓囬暱搴︾殑鏁扮粍鏃讹紝閫熷害姣擩ava 7蹇簡杩?0%銆傛墍浠ュ晩锛屽畼鏂规柟娉曚篃鍦ㄦ寔缁繘鍖栧憿锝?/p>