Java: Regex replacing -

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मेरे पास यह स्ट्रिंग है: 

  foo bar 567 baz

अब मैं प्रत्येक संख्या स्ट्रिंग num: से पहले जोड़ना चाहता हूं।> तो परिणाम होना चाहिए: 

  foo bar num: 567 baz

यह भी काम करना है: 

  foo 73761 barbazboom !! 87 परिणाम: foo num: 73761 बारबज़बूम !! संख्या: 87

नंबर खोज करने के लिए regex यह है: [0-9] +
लेकिन मैं + [मिलान सबस्ट्रिंग]

मैंने अब संख्याओं के साथ एक उदाहरण लिखा है, लेकिन एक अन्य उदाहरण हो सकता है: प्रत्येक ई-मेल पते से पहले जोड़ें ईमेल मिला:

मुझे आशा है कि आप समझ सकते हैं कि मेरा क्या मतलब है।
(बुरे अंग्रेजी के लिए खेद है, बेल्जियम में रहना, 14 वर्ष का)

धन्यवाद

समूहीकरण का उपयोग करें आप समूह को परिभाषित करने के लिए और $ n से परिणाम में समूह की पहचान करने के लिए कोष्ठक ( और ) का उपयोग कर सकते हैं, जहां n समूह अनुक्रमणिका है। 

  स्ट्रिंग स्ट्रिंग = "फू बार 567 बाज़"; स्ट्रिंग को प्रतिस्थापित किया गया = स्ट्रिंग.रेवलसभी ("(\\ d +)", "num: $ 1");

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