How can we make string upper case or lower case?

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Hi Friends, can u give code to convert ArrayList to HashMap and HashMap to ArrayList.

1 Answers  

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What is method overriding in java ?

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What is exception and error? and what is the difference between them?

2 Answers  

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what is the use of custom tags? with example?

1 Answers   Photon,

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What is array sorting in java?

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what is the collable collections in java?

2 Answers   Persistent,

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Difference between static and dynamic class loading.

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Need 2+ yrs experienced java techinical question papaer for company Iflex

1 Answers   TCS,

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What does nextint () do in java?

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What error occurs if a try-catch-finally statement sequence does not have a catch clause?

4 Answers  

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What data type is true or false?

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