Java Package isCompatibleWith()用法及代碼示例

java.lang.Package類的isCompatibleWith()方法用於檢查此程序包的規範版本是否與指定版本兼容。該方法以布爾值返回結果。

用法:

public boolean isCompatibleWith(String desiredVersion)

參數：此方法接受參數parameterVersedVersion，這是要檢查兼容性的版本。

返回值：此方法將結果作為布爾值返回。

下麵的程序演示了isCompatibleWith()方法。

範例1：

// Java program to demonstrate 
// isCompatibleWith() method 
  
public class Test { 
    public static void main(String[] args) 
    { 
  
        // returns the Package 
        // object for this package 
        Package myPackage 
            = Package.getPackage("java.lang"); 
  
        System.out.println( 
            "Package represented by myPackage:"
            + myPackage.toString()); 
  
        String desiredVersion = "1.5"; 
  
        // check if this package is compatible with or not 
        // using isCompatibleWith() method 
        System.out.println( 
            "Is this package compatible with or not:"
            + myPackage.isCompatibleWith(desiredVersion)); 
    } 
}

輸出：

Package represented by myPackage:package java.lang, Java Platform API Specification, version 1.8
Is this package compatible with or not:true

範例2：

// Java program to demonstrate 
// isCompatibleWith() method 
  
public class Test { 
    public static void main(String[] args) 
    { 
  
        // returns the Package 
        // object for this package 
        Package myPackage 
            = Package.getPackage("java.io"); 
  
        System.out.println( 
            "Package represented by myPackage:"
            + myPackage.toString()); 
  
        String desiredVersion = "1.0"; 
  
        // check if this package is compatible with or not 
        // using isCompatibleWith() method 
        System.out.println( 
            "Is this package compatible with or not:"
            + myPackage.isCompatibleWith(desiredVersion)); 
    } 
}

輸出：

Package represented by myPackage:package java.io, Java Platform API Specification, version 1.8
Is this package compatible with or not:true

參考： https://docs.oracle.com/javase/9/docs/api/java/lang/Package.html#isCompatibleWith-java.lang.String-

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