Why is "String".trim() not equal to " String ".trim()

[mvPrasad Regula]

For the following code Equal is printed

  
if("String".trim() == "String".trim()) 
    System.out.println("Equal"); 
else 
    System.out.println("Not Equal");
  

For the following code not equal is printed

  
if(" String ".trim() == "String".trim()) 
    System.out.println("Equal"); 
else 
    System.out.println("Not Equal");
  

[Bear Bibeault]

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